The invention provides an energy-saving LED flat panel lamp with along service life. The energy-saving LED flat panel lamp with the long service life comprises a base and an LED lamp body assembly arranged on the base in an erected mode. A first supporting rod and a second supporting rod are arranged on the base, and the first supporting rod and the second supporting rod are used for supporting the LED lamp body assembly. The first supporting rod and the second supporting rod are in a cylindrical shape, and the second supporting rod is arranged on the first supporting rod. A driving cylinder for driving the second supporting rod to move up and down relative to the first supporting rod is arranged inside the first supporting rod, and the base is internally provided with a controller, a rectifier filter unit, a constant current protection unit, a power supply, a data storage device, a wireless communication transmission unit, an alarm, a sounding device and a voltage stabilizer. In the actual use process, the energy-saving LED flat panel lamp with the long service life can achieve good use effect, relative movement of the first supporting rod and the second supporting rod can flexibly change the height of the LED lamp body assembly, and the rotation angle is variable, the use effect is good, and the humanization degree is high.