The invention provides a double-saccule remaining needle, and belongs to the field of medical device structure design. An upper cavity saccule and a lower cavity saccule are arranged in an infusion pipeline, an elastic saccule is arranged on the inner side of the tail end of a remaining needle pipe port, the upper cavity saccule is communicated with an infusion catheter, and the lower cavity saccule is filled with air or safety liquid and communicated with the elastic saccule. When infusion is paused, a stop clamp is closed, so that infusion can be paused, firstly, a second upper infusion catheter is compressed and closed by the stop clamp, secondly, the upper cavity saccule is compressed, so that infusion solution in the upper cavity saccule is pushed into a remaining needle pipe, the pipe is automatically flushed, finally, the lower cavity saccule is compressed, so that the elastic saccule expands, and the remaining needle pipe is closed. When infusion is restarted, the stop clamp is opened, so that infusion can be restarted, the lower cavity saccule rebounds, the remaining needle pipe is opened, the upper cavity saccule rebounds, blood flows into the remaining needle pipe and a first infusion catheter, and the blood is automatically pumped back. According to the double-saccule remaining needle, operation is simplified, patient pain is relieved, nurse workload is reduced, the problem of blood embolism easily caused by the remaining needle is completely solved, and patient safety is improved.