Aiming at the low security index in hazardous areas, introduces the design of mini-type four-rotor helicopter with controllable manipulator. Based on four-rotor helicopter that have been widely applied in military, manipulator and wireless communication facilities have been added to realize combinational control. The result shows that the design can use remote method to carry out work which directly completed by people before. It can clean up hazardous areas, and improve the security and has good application value.