The invention discloses a remotely-controlled coded lock.The remotely-controlled coded lock takes a base station as an information relay station of an electronic key and a lock body.The lock body is a receiver, and a receiving frequency or amplitude of the lock body is set by a user and can be changed by the user irregularly.The electronic key is a transmitter, a transmitting efficiency or amplitude of the electronic key is set by the user, and unlocking can be realized only when the transmitting efficiency or amplitude of the electronic key is equal to the receiving frequency or amplitude of the lock body.A user identification module is arranged in the electronic key, and information of the user identification module is stored in a lock body chip and available for the lock body to identify validity of the electronic key.A user identification code of the lock body can be set by the user, and only when the transmitting efficiency or amplitude of the electronic key is equal to the receiving frequency or amplitude of the lock body, the information of the user identification module accords with the user identification module information stored in the lock body chip, and a code transmitted by the electronic key accords with the user identification code stored in the receiver chip, the remotely-controlled coded lock can be unlocked.