Embodiments of the present invention provide a method, an apparatus, and a system for password control, and relate to the field of password technologies. The method includes: receiving, by a combination lock, an unlock password that is sent by a mobile terminal through a network; matching, by the combination lock, the unlock password with an unlock password preset for the mobile terminal; when the unlock password matches the unlock password preset for the mobile terminal, executing, by the combination lock, an unlock operation. Embodiments of the present invention enhance the security of entering passwords.