12306 Crackdown Triggers Widespread Failures on Third‑Party Ticket Platforms

Service disruptions on third‑party ticket platforms

In the days before the May Day holiday, users reported frequent errors such as “12306 request exception”, “seat reservation failed”, and “ticket issuance failed” on third‑party platforms. Affected platforms included Ctrip, Tongcheng, Didi, Travel One No. 1 and others.

Ctrip Business published an announcement that its online ticket‑issuance service was interrupted and that, from 2026‑04‑17 12:00, it would gradually close the train‑ticket booking entry, urging corporate customers to switch to the official 12306 channel.

Upgrade of the 12306 defense mechanism

The widespread failures stem from a major upgrade to the 12306 system’s defense mechanism. Historically, some third‑party platforms used automated programs for high‑frequency ticket scraping and bulk purchases, consuming server resources and undermining fair access for ordinary travelers.

To curb this behavior, the 12306 technology center introduced more precise big‑data analysis and risk‑control techniques. The new system no longer relies solely on request frequency; it analyzes account behavior patterns and targets two abnormal categories:

Accounts that frequently purchase large numbers of tickets for non‑owners.

Payment accounts that repeatedly pay for orders on behalf of others.

Statistical impact of the new risk‑control

According to official statistics, between 2024‑04‑16 and 2024‑04‑18 the system:

Placed 5.64 million transactions into a “slow‑queue”.

Directly rejected 704 000 transactions.

Intercepted a total of 1.056 million abnormal tickets.

The “slow‑queue” deliberately delays responses for accounts flagged as abnormal, causing third‑party automation scripts to time out while manual user actions remain unaffected.

Regulatory actions preceding the upgrade

On 2024‑04‑10, the Central Cyberspace Administration and the National Railway Administration jointly summoned seven major platforms—including Ctrip, Qunar, Feizhu and Meituan—ordering them to strictly comply with cybersecurity laws and cease large‑scale, high‑frequency ticket‑snatching using automation. The notice warned that relevant departments would strengthen technical monitoring and enforce penalties under the Cybersecurity Law and the Key Information Infrastructure Protection Regulations.

Implications for travelers

Railway authorities reiterated that 12306 is the sole official ticketing platform and has never cooperated with any third‑party service. “Ticket‑snatching software” not only fails to improve success rates but also triggers the risk‑control mechanism, leading to account throttling or potential personal data leakage. The official “candidate‑ticket” (候补购票) feature remains the only effective and compliant way to capture leftover tickets.

With the holiday approaching, 12306’s risk‑control measures are expected to remain stringent. Travelers may experience short‑term inconvenience, but the long‑term outlook points to a more transparent and fair ticketing environment as shortcuts via technical hacks are blocked.

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