A new 3-PUPU parallel robot is proposed,its mechanism characteristic is introduced. The degree of freedom of the parallel robot end executor is analyzed based on the screw theory,and the kinematics model of the robot is established by using the three coordinate method. The kinematics analysis and research of the robot end executor are carried out by using analytical method. Finally,according to a group of examples and using MATLAB,the displacement,velocity and acceleration of the parallel robot end actuator are got,and the correctness of the theory inference is validated.