The invention discloses a self-identification type information filling method and device for a command receiver. The method includes the following steps that: (0) password information pre-filled in the command receiver is acquired, and whether the password information is password information for testing is judged, if the password information is the password information for testing, a step (1) is executed, otherwise, no processing is executed; (1) external radio-frequency signals are acquired; (2) the radio-frequency signals are converted into intermediate-frequency signals, and password information contained in the intermediate-frequency signals is obtained; and (3) whether the password information contained in the intermediate-frequency signals in the step(2) is the password information for testing is judged, if the password information contained in the intermediate-frequency signals in the step(2) is the password information for testing, the method shifts to the step (1), otherwise, the password information contained in the intermediate-frequency signals in the step(2) is filled into the command receiver. The device includes a radio-frequency signal processing unit and a digital signal processing unit. Compared with the prior art, the self-identification type information filling method and device for the command receiver of the invention have the advantages of great convenience, high reliability, resource-saving performance and the like.