The invention discloses a drainage wire fixing clamp for replacing a pole-mounted switch without power outage in a 10kV distribution network, and relates to the technical field of power drainage wirefixing. The drainage wire fixing clamp is structurally characterized in that an insulating electric pole holding clamp is fixed in the middle of an insulating connecting plate, three drainage wire fixing clamps A are fixed on the insulating connecting plate, drainage wire fixing clamps B are respectively controlled by operating rods to move up and down, and a drainage wire is fixed in the drainagewire fixing clamps. The drainage wire fixing clamp has the beneficial effects that a lower pile head lead of a drop-out fuse is effectively fixed, unsafe factors such as lead shaking and accidental contact with a charged body in the operation process are prevented, the operation process is optimized, efficient and safe, the time and labor consumed when the drainage wire is fixed by an insulatingbinding belt are reduced, dangerous factors such as unreliable fixation and falling risks are reduced, and the safety of the operation process of replacing the pole-mounted switch in a charged mode isguaranteed. The drainage wire fixing clamp has the advantages of light weight, high strength, simple structure, convenience in use and the like, training is not needed in use, and maintenance is notneeded in the later period.