Chen taijiquan is one of the best martial arts,the connotation of which is broad and profound. This article emphatically analyzes the basic mechanics ideas of Chen taijiquan from ten aspects(the reaction and reaction, inertia laws and collaboration, torque, energy conversion, lever principle and balance principle, momentum theorem, tribology, circular theorem ).And combining some techniques of routines, skillful, push hands to illustrate them. Hope sports workers and taiji lovers have certain reference value from it,which can be used to better research of taijiquan and Chinese martial arts.