If you have seen a Baidu PPC keyword list, you may have wondered: "If Baidu already supports phrase match and broad match, why do we need so many similar keywords?" It is a fair question. On Google, a few well-chosen keywords with the right match types can cover a lot of ground. But Baidu works differently. Its match type system is more granular, it lacks Broad Match Modifier (BMM), and the relationship between match type, CTR, Quality Score, and CPC is more tightly coupled.
Here is why that long keyword list is not a mistake — it is a strategy.
🔢 The 5 Baidu Match Types
Baidu offers five match types, ranging from narrowest to broadest:
| Match Type | Example Query | Would Match | CTR Potential |
|---|---|---|---|
| Exact | [industrial pump] | "industrial pump" only | Highest |
| Exact Phrase | "industrial pump" | Close variations of "industrial pump" | High |
| Phrase | industrial pump | Any search containing the phrase in order | Medium |
| Core Phrase | industrial +pump | Searches containing both core words, in any order | Low |
| Broad | industrial pump | Any related search, including synonyms | Lowest |
Notice Baidu has five levels while Google has three (with BMM acting as a fourth). The extra layer — Core Phrase — is Baidu's attempt to offer something between Phrase and Broad without the full granularity of BMM. But it is not a substitute.
🔗 Why Match Type Affects Quality Score
The core insight is this: the broader your match type, the lower your expected CTR tends to be. When you use a broad match keyword, your ad can appear for loosely related searches. Users who see it may not be looking for exactly what you offer, so they click less frequently.
And since CTR is the single most important factor in Baidu's Quality Score calculation, lower CTR directly drags down your QS. A lower QS means higher actual CPC. The chain looks like this:
Because of this feedback loop, relying on broad match is rarely a winning strategy on Baidu, especially for smaller budgets. The lower CTR reduces your QS, which increases your CPC, which reduces the number of clicks your budget buys, which in turn reduces the data available for optimization.
📋 Why So Many Similar Keywords?
There is one question at the heart of this article: "If Phrase match already covers variations of my keyword, why do I need 50 similar keywords in my list?"
The answer is that Baidu's match types, especially at the Phrase level and broader, are not precise enough to give you the control you need for efficient spend. Here is the practical strategy we use:
| Step | What You Do | Why |
|---|---|---|
| 1. Start broad(ish) | Add short-tail keywords using Phrase and Exact Phrase match | Cast a wide net to gather search query data |
| 2. Analyze the search report | Review which search queries triggered your ads | Identify the queries that convert and those that waste budget |
| 3. Add exact match winners | Add high-converting queries as Exact match keywords | Get precise traffic with the highest CTR and lowest CPC |
| 4. Add long-tail variations | Expand with specific, longer keyword phrases | Capture niche intent at a very low cost per conversion |
| 5. Pause what does not work | Pause or delete non-performing keywords | Keep the account lean — let your budget focus on what works |
The ultimate goal of Baidu keyword research is not to guess the perfect keywords upfront. It is to cast a wide net, analyze what works, and then progressively refine toward an ever-growing list of proven, high-performing keywords. The long list is a starting point, not a final destination.
🚀 The Short-Tail vs Long-Tail Strategy
Here is how the two keyword types work together in practice:
| Short-Tail (Head) | Long-Tail | |
|---|---|---|
| Examples | "industrial pump", "solar panel" | "high pressure industrial water pump price", "residential solar panel installation cost Shanghai" |
| Search volume | High | Low |
| CPC | Higher | Lower |
| Conversion intent | Mixed — some browsing, some buying | High — specific intent |
| CTR | Medium (competitive) | Higher (more relevant) |
| Role | Attract volume, gather data | Drive conversions at low CPL/CPA |
🧠 Key Factors That Affect Baidu Quality Score
Understanding what drives QS helps you see why match type strategy matters:
- Click-Through Rate (most important): The single biggest factor. High CTR = users find your ad relevant.
- Relevance of ad copy and landing pages: Your ad and landing page must deliver on the keyword promise.
- Account history performance: Older accounts with consistent performance get a quality bonus.
- Ratio of active keywords: Accounts with many active, well-optimized keywords score higher.
- Account active status duration: Long-standing active accounts are trusted more by Baidu's system.
✅ Key Takeaways
- Baidu has 5 match types: Exact, Exact Phrase, Phrase, Core Phrase, and Broad.
- Baidu does not have Broad Match Modifier (BMM) — a critical difference from Google.
- Wider match types produce lower CTR, which reduces Quality Score and increases CPC.
- You need many similar keywords because Baidu's broader match types lack precision.
- Start with Phrase match keywords to gather data, then add Exact match winners over time.
- Long-tail keywords deliver the lowest CPL/CPA with the highest conversion intent.
- Don't be afraid of a long keyword list — it is the starting point, not the end result.
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