Abstract: A lock that can be locked from two sides thereof includes a first fixing base combined with a seat plate at one side of the door plate for receiving a securing plate and a restoring spring seat. The restoring spring seat defines a drive hole combined with a drive tube. A first drive shaft tube has one end combined with the restoring spring seat. The first drive shaft tube defines a slot such that a locking plate protrudes from and retract into the slot. A first handle is combined with the other end of the first drive shaft tube. The first handle has a lock whose lock core defines a double sector faced slot into which one end of the first lock control plate is inserted. The other side of the door plate is combined with a second fixing base and a seat plate. The second fixing base defines a shaft hole for passage of a second drive shaft tube. The second drive shaft tube receives a locking cylinder, an elastic member, a cone-shaped plate, and a connecting cylinder, and is combined with a restoring spring seat.