The invention relates to an automotive safety belt based on heartbeat and respiratory rate measurement. According to the automotive safety belt based on heartbeat and respiratory rate measurement, a heartbeat rate measuring module and a respiratory rate measuring module are fixed onto a safety shoulder belt and a safety belly belt; a signal processing device comprises a charge amplifying circuit, a low-pass filtering circuit, an A/D (analog/digital) conversion circuit, a signal collecting interface circuit, a data operation circuit, a data storage and double-safety redundancy algorithm module which are sequentially connected; the heartbeat rate measuring module and the respiratory rate measuring module are connected with the charge amplifying circuit through signal wires; the data storage and double-safety redundancy algorithm module is connected with an in-car alarming device through an in-car alarming control module. The automotive safety belt based on heartbeat and respiratory rate measurement can determine whether a diver is in a fatigue driving sate or in abnormal health according to the heartbeat rate and the respiratory rate of the driver, and issue warning sound of a corresponding level when abnormality is determined, thereby being capable of avoiding traffic accidents to the maximum degree.