The present invention discloses a chain skeleton matching method in motion capture technology, which includes: a chain skeleton with optimum fixing length is generated from multi-frame joint center data dissatisfied fixing skeleton length, and is matched with original joint center data, accordingly, original joint center data is adjusted for satisfying fixing skeleton length restriction; when a chain skeleton is processed matching, aim of smooth restriction skeleton motion orderly can be realized by adding smooth restriction to object function. The method can take full use of motion details provided by motion capture technology because of using sparse matrix technology and joint center position parametrization method, and has merits of rapid speed and high efficiency. The result simulates motion state of human body chain skeleton more accurately.