The invention relates to an adjustable type disc pin locating and locking device. The device comprises a telescopic shaft, a locking disc, an adjusting disc, a fixed cylinder and a support; the telescopic shaft is sleeved with the fixed cylinder, the adjusting disc is arranged on the front portion of the outer surface of the fixed cylinder in a sleeving manner, and the adjusting disc and the fixed cylinder are connected through a thread; the locking disc is inserted in an inserting groove in one side of the front portion of the telescopic shaft and is attached to the front end of the adjusting disc; the support is fixed to the rear portion of the outer face of the fixed cylinder; and the adjustable type disc pin locating and locking device has the beneficial effects that different positions of the telescopic shaft are adjusted, the any position of the telescopic shaft is locked, large loads can be borne through thread stress, locking is reliable, locking and unlocking are carried out in an inserting and pulling manner, the structure is simple, and operation is convenient.