The invention relates to a method for capturing human motion by the aid of fused depth images and three-dimensional models. By the aid of the method, problems of adhesion requirement on mark points, inconvenience in interaction and easiness in confusing and shielding the mark points of a method for optically capturing motion can be solved. The method includes acquiring depth information of human actions; removing backgrounds of motion objects; acquiring complete depth information of the human actions; converting the complete depth information of the human actions into three-dimensional point-cloud information of human bodies; acquiring three-dimensional human action models; establishing databases; enabling the databases to be in one-to-one correspondence with data of human action skeleton databases; extracting depth information of to-be-identified human actions to build the three-dimensional models; then matching the similarity of the three-dimensional models with the similarity of human actions in the databases of the three-dimensional models; outputting human action skeletons according to similarity sequences. The human action skeletons are motion capturing results. The method has the advantages that sensors or added mark points can be omitted on the human bodies, the method is easy to implement, motion sequences are matched with one another by the aid of a regular time wrapping process, the matching precision of each two sequences can be improved, the matching time can be greatly shortened, and the motion capturing speed and the motion capturing precision can be guaranteed.