Abstract: A radio frequency laser includes: a power box, a radio frequency cavity, an electrode, and a first metal blocking ring. A bottom plate of the power box is provided with a first installation hole and a first installation groove, and the first installation groove is arranged around the first installation hole. A top plate of the radio frequency cavity is provided with a second installation hole and a second installation groove, and the second installation groove is arranged around the second installation hole. When the power box is assembled with the radio frequency cavity, the second installation hole corresponds to the first installation hole, and the second installation groove corresponds to the first installation groove.