Flushing device with combined manual and sensor-based flushing, comprising a human body signal receiving device, a PCB control device and an air pump, wherein the human body signal receiving device has a communication connection to the PCB control device, and wherein the PCB control device has a control connection to the aforementioned air pump, wherein the flushing device further comprises a first normally closed valve, a first normally open valve and a first pumping mechanism, wherein the PCB control device has a control connection to the first normally closed valve and the first normally open valve, wherein the air inlet end of the first normally closed valve is connected to the air outlet end of the aforementioned air pump, wherein the air outlet end of the first normally closed valve is connected to a first airbag for activating the toilet flushing, wherein the air outlet end of the first pumping mechanism is connected to the air inlet end of the first normally open valve, wherein the air outlet end of the first normally open valve is connected to the first airbag for activating the toilet flushing, wherein, when the human body signal receiving device receives a human body signal, the PCB control device controls the opening of the first normally closed valve, while the first normally open valve is closed, wherein, following the activation of the air pump, air passes through the first normally closed valve into the first airbag for activating the toilet flushing, wherein the first normally closed valve then returns into the closed state, while the first normally open valve returns into the open state, wherein air from the first airbag for activating the toilet flushing escapes through the first normally open valve, and wherein, when the first pumping mechanism is actuated manually, air is led through the first normally open valve and then reaches the first airbag for activating the toilet flushing. a human body signal receiving device, a PCB control device and an air pump, wherein the human body signal receiving device has a communication connection to the PCB control device, and wherein the PCB control device has a control connection to the aforementioned air pump, wherein the flushing device further comprises a first normally closed valve, a first normally open valve and a first pumping mechanism, wherein the PCB control device has a control connection to the first normally closed valve and the first normally open valve, wherein the air inlet end of the first normally closed valve is connected to the air outlet end of the aforementioned air pump, wherein the air outlet end of the first normally closed valve is connected to a first airbag for activating the toilet flushing, wherein the air outlet end of the first pumping mechanism is connected to the air inlet end of the first normally open valve, wherein the air outlet end of the first normally open valve is connected to the first airbag for activating the toilet flushing, wherein, when the human body signal receiving device receives a human body signal, the PCB control device controls the opening of the first normally closed valve, while the first normally open valve is closed, wherein, following the activation of the air pump, air passes through the first normally closed valve into the first airbag for activating the toilet flushing, wherein the first normally closed valve then returns into the closed state, while the first normally open valve returns into the open state, wherein air from the first airbag for activating the toilet flushing escapes through the first normally open valve, and wherein, when the first pumping mechanism is actuated manually, air is led through the first normally open valve and then reaches the first airbag for activating the toilet flushing.