Abstract: For dealing with the drilling accident, the male and female taps are used in the conventional fishing technique, but it is difficult to make the thread and the taps have low connection strength. From the aspects of improving the connection strength between fishing tools and drilling pipes, the slip socket is innovatively used to deal with drilling accidents in underground coal mine. Through the field tests, three drilling accidents have been successfully dealt with. The results show that slip socket can improve fishing success rate by solving drill pipe fracture accidents. The points for attention are pointed out to provide the experience for dealing with similar accidents