Sliding sleeve opening device

The invention provides a sliding sleeve opening device which comprises a clamping hanging part, a ball seat and a salvage part, wherein the clamping hanging part comprises a connecting section, a clamping hanging section and a first fluid channel; the inner wall of the first fluid channel is provided with a locking part; the ball seat comprises a connecting end connected with the connecting section, a guiding end opposite to the connecting end and a second fluid channel formed between the connecting end and the guiding end. The salvage part is connected with the ball seat. The ball seat is arranged between the clamping hanging part and the salvage part. The sliding sleeve opening device comprises the ball seat provided with the salvage part, and thus the whole sliding sleeve opening device has a salvage function. Thus, a whole sliding sleeve opening device string formed by series connection can be fished out of a shaft in one time through a fishing tool, and the fishing working efficiency is improved. 本发明提出一种