Illuminance adjusting device for improving performance of LED lamp

The invention relates to the technical field of LED lamp auxiliary equipment, and discloses an illuminance adjusting device for improving the performance of an LED lamp. The device comprises a shell, wherein a first connecting plate is arranged inside the shell, photoresistors are arranged on the lower side of the first connecting plate, an electromagnetic device is movably connected to the outer side of each photoresistor, and a fixing shell is arranged on the outer side of each electromagnetic device. According to the illuminance adjusting device for improving the performance of the LED lamp, the problem that dust is extremely prone to be attached to a circuit board when the LED lamp is used is solved through the connection of the shell and first pressing plates, the circuit board is cleaned by means of the characteristics of magnetic fluid, the current blockage caused by the dust is avoided when the circuit board is electrified, the service life of each internal component of a lamp holder is greatly prolon