Locking piece of double-direction pull slide rail

The utility model relates to a locking piece of a double-direction pull slide rail, which comprises a chock block which is installed on a fixed rail, a fixed seat which is fixed on the slide rail, a locking hook with an operation handle, a locking pin shaft and a torsion spring; the locking hook is movably installed on the fixed seat through the locking pin shaft, and the lower end of the locking hook is stopped on the chock block; and the torsion spring is sleeved on the locking pin shaft, one end of the torsion spring is fixed on the fixed seat, and the other end is fixed on the operation handle. The locking piece is paired to be arranged on two ends at the same side edge of the double-direction pull slide rail in opposite directions; and after being installed, the double-direction pull slide rail can be pulled out to return by operating in a single edge by one person, can realize the automatic locking, and has simple structure and convenient application.