The present disclosure provides a charging gun including a cable, an outer casing and a strain relief structure. The outer casing includes a first case and a second case, wherein the first case is detachably assembled with the second case. The strain relief structure includes a first portion, a second portion and a plurality of first ring-shaped protrusions. The first portion is detachably assembled with the second portion, the first portion is disposed on the first housing, and the second portion is disposed on the second housing. When the first case is assembled and connected with the second case, the first portion is assembled and connected with the second portion, and at least a part of a surface of the cable is covered by the strain relief structure, and the strain relief structure is clamped between the cable and the outer casing.