Gas pressure regulator with blow-off valve

According to the technical scheme, the fuel gas pressure regulator is characterized by comprising a valve body, a valve port is formed in a partition plate in the valve body, a valve element used for sealing is arranged at the position, on one side of an outlet cavity, of the valve port, a signal box internally provided with a diaphragm is installed on the valve body, and an inner cavity of the signal box is divided into a balance cavity and an adjusting cavity through the diaphragm; the balance cavity is communicated with one side of the outlet cavity, an adjusting spring used for abutting against the limiting diaphragm is arranged in the adjusting cavity, an inner circumferential hole communicated with the two sides is formed in the diaphragm, the valve element is connected with a valve rod, and the valve rod extends into the signal cavity from one side of the balance cavity and penetrates through the inner circumferential hole; and diffusing seats are arranged in the balance cavity and the adjusting cavity