The invention discloses a guniting manipulator. The guniting manipulator comprises a guniting working device, a power device, a control system and a base plate, wherein the guniting working device is arranged at the center of the base plate, a first hydraulic cylinder is connected to a main arm of the guniting working device, the bottom end of the main arm is mounted on the base plate through a pin shaft, the top end of the main arm is connected with a rotary base, a rotary motor is mounted on the rotary base, the rotary motor is connected with and drives a rotary gear through a pinion, the bottom end of a middle arm is hinged to the rotary gear, the middle arm is connected with a second hydraulic cylinder, an inner arm is mounted in the middle arm in a sleeved mode, a telescopic hydraulic cylinder is mounted between the middle arm and the inner arm, a track arm is hinged to the top end of the inner arm, a third hydraulic cylinder is mounted between the track arm and the inner arm, a spray-head device is mounted on the track arm, and a spray-head swing motor and a spray-head self-rotating motor are connected to the spray-head device. The guniting manipulator is high in automation degree, capable of adjusting the guniting position by itself and conducting guniting in a reciprocating mode and high in guniting quality.