The present invention discloses a method for filtering Chinese character image type spam, comprising: extracting Chinese characters in an image under an image background; using key points of the Chinese characters to express character features of the Chinese characters; matching the character features with a preset sample database, so as to recognize spam; and filtering the spam. The present invention also discloses a system for filtering Chinese character image type spam. The method and the system of the present invention not only can retain a certain degree of semantic information, but also can quickly and accurately perform recognition during filtering of the Chinese character image type spam. The method and the system can achieve the extremely low error recognition rate and the extremely high accuracy rate in the case of only using a very small feature database. The method and the system of the present invention have more slack character recognition requirements, and can be adapted to more varied images with more complicated backgrounds; the method and the system can achieve a good effect for relatively comprehensive images; and in an application for filtering the Chinese characters, the method and the system extract a few of keyword sample database from the actual spam images, thereby greatly improving algorithm efficiency.