Delta　mechanism　with　the　smooth　and　flexible　movement,reliable　structure,　is　a　kind　of　parallel　mechanism.Through　inversely　solving　the　Delta　mechanism　space　position　is　to　set　up　a　kind　of　equivalent　relationship　and　through　analysis　of　the　mechanism　is　to　solve　the　rotating　angle　of　the　hinge　that　is　between　connecting　rods　that　are　equivalents　of　three　parallelograms,and　the　base　platform.Through　inverse　solution　of　kinematics　before　building　the　whole　mechanism,the　range　of　the　center　in　mobile　platform　can　be　found　intuitively　from　graphics　when　it　is　satisfied　with　the　restriction　condition.According　to　requirements,　the　optimization　of　mechanical　structure　can　be　achieved.　©　(2013)　Trans　Tech　Publications,　Switzerland.