Structure-improved lock

The utility model relates to a rows of sheet lock with an improved structure, which comprises a lock box, a box cover, a lock bolt mechanism, a lock bolt, a lock bolt mechanism, a lock bolt, a knob switch and a linking mechanism, wherein the lock bolt mechanism is arranged in the lock box and is provided with a slide seat. The lock bolt is connected to the slide seat and is capable of being linked; the lock bolt mechanism is arranged in the lock box, and is provided with a key which can be inserted into the lock box and a plurality of rows of sheets which can be pushed by the key to vertically slide; the lock bolt can extend out of or retreat back into the lock box in the transverse direction when the rows of sheets are pushed by the key to vertically slide. The knob switch is capable of directly controlling the rows of sheets to vertically slide and driving the lock bolt retreat back into or extend out of the lock box; the linking mechanism can continue to rotate after the key completely brings in the lock bolt and can make the lock bolt retreat back into the lock box.