The purpose of this study was to establish the archer's shooting form by biomechanical analysis model to inspect the subject's performance. The subject of this study was Yi-Yin Lin, the student of NCPES. The subject was filmed by high-speed camera, and transferred into pictures with Sony Cvp-3. Incorrect movements are found out and evaluated on the basis of this model for improvement in order of priority. Base on the result of the study, suggestions to this shooting form are proposed as follows: 1.The high or low of arrow impact was influence by bow hand's stability. 2.Through the coach's verbal, assistant equipment, muscle's feeling and neck's weight train will improve head's position. 3.During the anchoring motion do not raise the arrow hand's elbow. 4.During the banding motion, the force of bow hand has to move to the point between the thumb and the index finger.