The invention discloses a valve lock and an intelligent lock control system. The valve lock is provided with a lock body. The lock body can be fixedly assembled to a valve rod extension portion of a valve. A valve rod travel limiting piece is fixedly arranged on a valve rod of the valve, and the valve rod travel limiting piece is locked or released by utilizing a lock rod of the lock body. The valve lock for locking the valve provided in the manner has the characteristics of being stable in structure, practical and reliable. According to the valve lock, because a magnetic element is arranged on the valve rod travel limiting piece, a first magnetic induction unit and a second magnetic induction unit are arranged at different positions of the interior of a locked chamber of the lock body, and a state detection circuit is arranged in the valve lock, lock state detection and valve state detection are achieved. Additionally, the valve lock can further be used in cooperation with a computerkey, a parameter acquisition device and a management host to form the whole set of intelligent lock control system, and unlocking and locking control over the valve and the systemic management and monitoring on switch state detection are achieved.