The utility model relates to an equipment is salvaged to the well drilling instrument, in particular to device for shaft-like instrument is salvaged, and its technical scheme is: including a fishing guide section of thick bamboo, locking device, adjustment sleeve and crossover sub, the adjustment sleeve is connected on the upper portion of a fishing guide section of thick bamboo, the crossover sub is connected to the upper end of said adjustment sleeve, the upper portion jointed rod of crossover sub, and locking device lies in the both ends of adjustment sleeve, and a fishing guide section of thick bamboo is connected to locking device's lower extreme, and the top at the adjustment sleeve is fixed to locking device's upper end, the beneficial effects of the utility model are that: simple structure, convenient to use can effectively realize the salvage of tester for the well drilling, the salvage of the shaft-like tester of being convenient for, both ends are equipped with the salvage that locking device can effectively realize shaft-like instrument about the adjustment sleeve, have effectively improved work efficiency, have lightened intensity of labour