The invention relates to the field of answering machines, and specifically relates to an answering machine monitoring and alarm device. The technical problem to be solved is to provide an answering machine monitoring and alarm device that can monitor an answering machine in real time and can alarm in the case of abnormality of the answering machine. The adopted technical scheme is as follows: the answering machine monitoring and alarm device comprises a telephone circuit signal port, a rectifier circuit, a power circuit, a control circuit and an alarm circuit, wherein the telephone circuit signal port is connected with an input end of the rectifier circuit, an output end of the rectifier circuit is connected with the input end of the control circuit, the output end of the control circuit is connected with the alarm circuit, and the power circuit is connected with the alarm circuit. The answering machine monitoring and alarm device is applicable to the field of telephones.