The invention discloses a multi-channel automatic charging device and method. The multi-channel automatic charging device comprises switches and a central controller, and is characterized in that the switches are respectively arranged on charging circuits corresponding to charged devices and control on-off of the corresponding charging circuits according to received control signals sent by the central controller; and the central controller is connected with each switch through an isolator and sends control signals according to the charging interval time and the charging time of each charged device in a preset program. According to the invention, the switches control on-off of the corresponding charging circuits according to the control signals sent by the central controller, so that charging for the charged devices connected with the charging circuits can be controlled; and the central controller sends the control signals to the corresponding switches according to the charging interval time and the charging time of each charged device in the preset program, so that charging for the charged devices can be completed automatically at regular intervals according to a product instruction, the service life and the use efficiency of a battery are ensured, and the investment cost and other economic losses of team or group equipment and instruments are reduced.