Baidu Keyword Research Tools and Methodology

Take your top-performing Google keywords, run them through a translator, plug them into your China strategy. That’s what most foreign companies do. And it fails almost every time. Not because the translation is bad, but because Chinese users search in ways that have nothing to do with how English speakers search. Different phrases. Different sentence structures. And a language where the number of keyword combinations for any single concept is orders of magnitude larger than English. Below are the three tools that give you real Baidu data, plus a look at why Chinese keyword research has to be treated as its own thing.

Baidu Index

URL	index.baidu.com
Cost	Free
Comparable to	Google Trends
Keyword limit	5 at a time
Access requirement	Chinese mobile phone number (SMS verification)

Start here. Free, publicly available, and it’s essentially China’s answer to Google Trends.

Search term popularity over time, broken down by province. Demographic data on who’s doing the searching: age, gender, where they’re located. Want to know if a keyword spikes during Chinese New Year, or how search interest compares between Shanghai and Chengdu? This is the tool for that.

The frustrating part: you can only look at 5 keywords at once. Five. If you’re used to pulling hundreds of terms through Ahrefs, that feels like working with one hand tied behind your back. And before you even get access the platform wants a Chinese mobile phone number for SMS verification.

Baidu Index requires a Chinese mobile phone number just to log in. For most foreign teams, that’s the end of the road before they’ve even started.

A lot of companies hit that wall at step one and never figure out a way around it.

Baidu Keyword Planner

URL	aifanfan.baidu.com
Cost	Free (with PPC account)
Comparable to	Google Ads Keyword Planner
Data provided	Monthly volumes, related keywords, CPC estimates
Access requirement	China business registration + Baidu PPC account

Lives inside Baidu’s ad platform. Same general idea as Google Ads Keyword Planner: monthly search volumes, related keyword suggestions, CPC estimates.

Getting in is the hard part. Full access needs a valid China business registration, plus a Baidu PPC account. That means going through Baidu’s advertiser onboarding, which is neither quick nor particularly straightforward if you’re not familiar with the process.

But most people miss something here. You don’t have to actually run paid campaigns to get value from the data. The keyword volumes, competition metrics, related suggestions, all of that is just as useful for organic SEO planning. The PPC account is basically your ticket to the research. You’re paying for access to the data, not committing to an ad budget.

You don’t need to run Baidu ads to use the Keyword Planner. The search data alone makes the onboarding process worth it, even if you never spend a yuan on PPC.

5118.com - Where the Real Data Lives

URL	5118.com
Cost	Free tier available, paid plans for full access
Comparable to	Ahrefs / SEMrush (but for Baidu)
Key feature	Closest available data to Baidu’s actual search volumes
Bonus	AI-powered content optimisation

If there’s one tool that Chinese SEO people rely on daily, this is it. 5118 gets closer to Baidu’s actual search volume numbers than anything else on the market. Think of it as China’s version of Ahrefs, but built from the ground up for Baidu.

Long-tail keyword discovery, CPC estimates, competition scoring. The core features you’d expect from a serious SEO platform. On top of that there’s an AI-powered content optimisation layer that lets you check how well your pages match what Baidu considers relevant for a given search term. Pretty useful for understanding why a competitor outranks you on a specific query.

Free tier gives you a taste. Real functionality is behind paid plans. For companies doing sustained Baidu SEO this is probably the most important tool subscription you’ll pay for.

Why Chinese Search Queries Are a Different Animal

Most companies rush past this section. It’s actually the one that matters the most.

Chinese is character-based, not word-based.

	Chinese	English
Unit of meaning	Single character	Word (multiple letters)
Short-head keywords	1 to 2 characters	1 to 2 words
Long-tail keywords	3+ characters	3+ words
Combinations per concept	Thousands	Dozens to hundreds
Typical search style	Full questions, conversational	Short keyword fragments

Each character carries meaning on its own, and characters combine to form concepts. What that means in practice: the number of possible keyword variations for any given topic is vastly larger in Chinese than in English. We’re talking thousands of character combinations that describe the same idea, each one carrying slightly different intent.

Chinese has thousands of character combinations for the same concept. The long-tail keyword universe makes English look tiny by comparison.

Short-head keywords are usually one or two characters. Long-tail starts at three and up. But because every individual character already means something, even a short Chinese keyword has more packed into it semantically than a typical English one.

Then there’s how people actually use Baidu. Chinese users tend to type out full questions when they search. Not the clipped two-word keyword strings you see on Google. Someone in Shanghai looking for office space is going to type something that reads more like a question you’d ask a colleague than a search query. That habit changes everything about how you need to approach keyword research.

The thing is, if you take your English keyword list and translate it, you capture almost nothing useful. The overlap between translated keywords and what Chinese users actually type into Baidu is basically zero. You’re optimising for phrases nobody searches for.

Direct translation of English keywords captures almost nothing on Baidu. The overlap with real Chinese search terms is close to zero.

Real keyword research for Baidu starts from a blank page. In Chinese. Done by someone who thinks in the language and understands the search patterns. There’s no tool that automates this away and no shortcut that gets you there faster.