The invention discloses a mail box control system, a mail box and a door bell and relates to the field of intelligent electronic devices. The mail box of the control system comprises a box body, a controllable door, a first human-computer interface circuit, a first communication circuit and a first control circuit; the door bell comprises an electronic sounding bell, a second human-computer interface circuit, a second communication circuit and a second control circuit; an indoor access point comprises a third communication circuit and a third control circuit which are connected in a coupled manner; the first control circuit sends a first instruction to the second control circuit by means of the first communication circuit and the second communication circuit when the first human-computer interface circuit is triggered, the second control circuit responds to the first instruction to control the electronic sounding bell to give out bell sounds; and when the first control circuit receives a second instruction, opening the controllable door, from the third control circuit by means of the first communication circuit and the third communication circuit, the controllable door is controlled to open the box body. Due to the above manner, the mail box control system, the mail box and the door bell can achieve that express items can be safely, easily and fast received and taken when no persons are at home.