The invention discloses a hot air flow transmitter with the environment temperature compensation function. The hot air flow transmitter comprises a constant-temperature-difference Wheatstone bridge type module, a voltage follower module, an AD conversion module, a single-chip microcomputer module, a DA conversion module and a VI module. The constant-temperature hot type air quality flow transmitter has the advantages that response speed is high, measurement is precise, reliability is high, a hardware circuit is easy to obtain, and the transmitter is not influenced by environment temperature. Besides, a watchdog circuit monitors a single-chip microcomputer to prevent program runaway and other special situations, and controllable protection of a system is achieved.