The invention discloses a micro-power intelligent digital liquid level wireless control device, which relates to the technical field of liquid level wireless control. The device comprises a code transmitting unit and a receiving and decoding control unit, wherein the transmitting process of the code transmitting unit is as follows: the code transmitting unit is correspondingly in sleeping mode when the liquid level is static or an external magnetic floating body is failed in reaching a closing or opening critical point of an internal reed switch, the code transmitting unit transmits the code in a set transient pulse work mode only if the external magnetic floating body reaches the critical point of the internal reed switch and generates a conversion process, and then, the code transmitting unit turns to the sleeping state again, so that the purpose of micro power consumption is implemented. Functions of water source detection, intelligent protection and remote display of liquid level state of a water tower are flexibly used, properties, such as thermostability, water repellency, moisture resistance and the like, are implemented based on the micro-power property, and the device is safe, reliable, energy-saving, environmentally friendly and convenient to mount.