The invention relates to a Chinese character structure-based character click verification code identification and filling method, which comprises the following steps of: pre-configuring a semantic word group library, collecting semantic Chinese word groups and adding the semantic Chinese word groups for retrieval; pre-configuring a structured Chinese character library, collecting Chinese characters and adding a structure label to a single Chinese character for retrieval; collecting character click verification code pictures, detecting areas with Chinese characters in the character click verification code pictures, cutting the areas into single Chinese character pictures, and recording area coordinates of the Chinese character pictures as filling values; pre-creating a recognition model forpredicting Chinese characters; according to the identification model, performing identification prediction on each Chinese character picture to obtain each predicted Chinese character; carrying out retrieval matching on each predicted Chinese character, an input semantic class phrase library and a structured Chinese character library, and carrying out weighted comprehensive evaluation to obtain atarget Chinese character filling sequence; and according to the obtained target Chinese character filling sequence and the regional coordinates of each Chinese character picture, clicking a verification code in a verification window of the verification code and submitting the verification code.