Fixing lock

The utility model discloses a fixing lock, comprising: a lock body, a latch, a first elastic component, a lock tongue, a second elastic part, and a stirring block, wherein the latch can be arranged in the lock body in a to-and-fro moving manner between a locking position and an unlocking position, and the peripheral surface of the latch is provided with a first limit groove and a second limit groove; the first elastic component makes the latch reset; the lock tongue can be arranged in the lock body in a to-and-fro moving manner between a latched position and a loosened position, the lock tongue is provided with a lock tongue head part, when the latch is at the locking position, the lock tongue head part is opposite to the first limit groove, when the latch is at the unlocking position, the lock tongue head part is opposite to the second limit groove; the second elastic part is used for driving the lock tongue to move to the latched position; the stirring block is arranged in an unlocking hole, and can drive the lock tongue to move to the loosened position under the stirring of a key. The fixing lock provided by the utility model not only can prevent the key from being left in a cabinet door, but also does not influence the subsequent use of the key.