The utility model belongs to a dig manipulator of coal exploitation, manipulator one end is equipped with the bucket, the chassis that sets up the bearing is connected to the other end, the bucket isequipped with the roof -rack, and the periphery sets up the steel pipe and connects the roof -rack, upper portion is equipped with the bucket tooth that the setting of bucket top is connected to the second driving machine in the roof -rack, the bucket tooth passes through the pedestal and connects the roof -rack, the bucket tooth periphery is connected for the circular arc to the pedestal, the effect of more conveniently digging the coal has through the second driving machine when letting the bucket tooth rotate, the bucket tooth is peripheral through pedestal zonulae occludens, let the buckettooth have the effect that reduces the particle and infiltrate the roof -rack, the manipulator other end passes through the bearing and connects the chassis, it has the motor to set up respectively in the chassis, first driving machine and controller, the motor leads to threading tube connects first driving machine respectively, second driving machine and controller, let the manipulator have theeffect that the electric energy starts, the controller leads to threading tube connects first driving machine and second driving machine, let the manipulator have automatic operation's effect.