The invention discloses a multipath ignition device combustion temperature safety type monitoring system and monitoring method, and a multipath ignition device monitoring method. The monitoring system includes N non-contact infrared sensors, wherein N>=2; N air valve or oil valve switch modules; a multiplexer switch module; a single-end variation difference input module; a data acquisition module; and a data cache and data analysis module. The data cache and data analysis module is successively connected with the data acquisition module, the single-end variation difference input module, the multiplexer switch module, and the N non-contact infrared sensors, and the data cache and data analysis module is connected with the N air valve or oil valve switch modules and the multiplexer switch module. A plurality of ignition devices can be monitored by one system, the data can be saved; and the air valve or the oil valve can be closed to reduce the workload of personnel, and great use values can be guaranteed.