The utility model relates to a GIS gas -charging connection fixing clip, it includes the half -circular arc steel sheet, half -circular arc steel sheet both sides are equipped with the semicircle baffle, the centre of a circle department of semicircle baffle is equipped with the semicircle and perforates, semicircular groove is gone up with the semicircle baffle common the constitution to the half -circular arc steel sheet, go up semicircular groove through pivot and semicircular groove swing joint down, and upper and lower semicircular groove sets up the circular snap ring that one common constitution can open and shut for the symmetry, upper and lower semicircular groove's corresponding one end is equipped with kayser and spring bolt respectively, semicircular groove's bottom is equipped with handheld pole down. Because semicircular groove constitutes a circular snap ring through the pivot, can directly block the gas -charging connection from top to bottom to locking under the effect of kayser and spring bolt because the effort of gas -charging connection is the horizontal direction, can offset under the effect of semicircle baffle, and semicircular groove's perpendicular effort accessible kayser and spring bolt is offset, consequently can guarantee gas -charging connection firm in connection, draws hard to drag and to realize semicircular groove's switching from top to bottom.