To　improve　sign　language　synthesis　systems　which　can　read　and　understand,　to　obtain　more　convenient　access　to　the　real　man-machine　interaction　means,　based　on　the　statistical　model　of　the　Chinese　sign　language　rhythm　method,　by　tracking　video　sign　language　movements,　and　analyzing　the　expression　of　sign　language　prosodic　features,　the　sign　language　synchronized　parameters　were　collected.　In　order　to　be　more　authentic　and　accurate　to　information　rhythm,　based　on　sign　language　expression　limb　joints　at　different　parts　of　the　right　wrist　and　elbow　rhythm,　independent　study　were　conducted.　In　addition,　this　paper　introduces　a　system　of　sign　language　synthesis　of　the　key　technology　and　process　integrity.　Experiment　results　show　that　the　statistical　model　based　on　the　rhythm　method　can　get　more　effective　feature　parameters　of　rhythm　changes,　and　simulate　the　rhythm　through　sign　language　synthesis　system.