A submersible pump, comprising: a pump body provided thereon with a control panel; and at least two sensing assemblies, wherein the sensing assemblies each comprises a liquid level sensor, an indicator light, and a switch; the switch is provided on the control panel and is configured to turn on or off the liquid level sensor; the indicator light is configured to display an on/off state of the liquid level sensor; and all the liquid level sensors are arranged at different heights on a side of the pump body; characterized in that the submersible pump comprises a controller that is electrically connected to the at least two sensing assemblies, wherein each of the liquid level sensors is configured to output a first signal and/or a second signal to the controller; the switch is a push switch; the push switch is electrically connected to the controller and to the liquid level sensor, the indicator light is electrically connected to the controller, and the controller is configured to recognize different characteristic signals sent by different liquid level sensors; wherein the submersible pump is connected to a power supply and placed in a liquid pool; in response to the first signal, the controller is configured to execute a start program to start the submersible pump, wherein a signal processing module of the controller is configured to receive and recognize the first signal, and output a first feedback signal to a control module of the controller; in response to the first feedback signal, the control module is configured to control a motor to rotate, so as to control the submersible pump to start; in response to the second signal, the controller is configured to execute a stop program to stop the submersible pump, wherein the signal processing module of the controller is configured to receive and recognize the second signal, and output a second feedback signal to the control module; in response to the second feedback signal, the control module is configured to control the motor to stop, so as to control the submersible pump to be turned off. a pump body provided thereon with a control panel; and at least two sensing assemblies, wherein the sensing assemblies each comprises a liquid level sensor, an indicator light, and a switch; the switch is provided on the control panel and is configured to turn on or off the liquid level sensor; the indicator light is configured to display an on/off state of the liquid level sensor; and all the liquid level sensors are arranged at different heights on a side of the pump body; characterized in that the submersible pump comprises a controller that is electrically connected to the at least two sensing assemblies, wherein each of the liquid level sensors is configured to output a first signal and/or a second signal to the controller; the switch is a push switch; the push switch is electrically connected to the controller and to the liquid level sensor, the indicator light is electrically connected to the controller, and the controller is configured to recognize different characteristic signals sent by different liquid level sensors; wherein the submersible pump is connected to a power supply and placed in a liquid pool; in response to the first signal, the controller is configured to execute a start program to start the submersible pump, wherein a signal processing module of the controller is configured to receive and recognize the first signal, and output a first feedback signal to a control module of the controller; in response to the first feedback signal, the control module is configured to control a motor to rotate, so as to control the submersible pump to start; in response to the second signal, the controller is configured to execute a stop program to stop the submersible pump, wherein the signal processing module of the controller is configured to receive and recognize the second signal, and output a second feedback signal to the control module; in response to the second feedback signal, the control module is configured to control the motor to stop, so as to control the submersible pump to be turned off.