The invention discloses a temperature and pressure reduction regulating valve which comprises a regulating valve body. A water inlet pipe is fixedly installed on the outer surface of one side of the regulating valve body, a connecting valve is fixedly installed on the outer surface of the side, close to the regulating valve body, of the water inlet pipe, and the water inlet pipe and the regulating valve body are fixedly installed through the connecting valve; and a valve hole is formed in the side, close to the connecting valve, of the outer surface of the water inlet pipe, a cleaning valve is movably installed in the valve hole, a movable rod is movably installed in the lower end of the cleaning valve, and a cleaning piece is fixedly installed on the outer surface of the movable rod. According to the device, dirt in a pipeline can be filtered, the situation that the dirt enters the regulating valve to damage the regulating valve is avoided, the service life of the device is prolonged, meanwhile, the filtered dirt can be cleaned and discharged, the device does not need to be disassembled, the cleaning mode is simple, rapid and efficient, and the using effect of the device is improved.