The invention relates to an illuminator, in particular to an LED fluorescent light. The invention comprises a columnar tube body and two LED luminescence modules arranged on both ends of the tube bodyrespectively. Each LED luminescence module comprises an end cover. The end cover is provided with a hole and the end of the tube body is inserted into the hole. Lugs are arranged on the internal wallof the hole of the end cover. Recesses are arranged at the positions on the external wall of the tube body corresponding to the lugs. Clip connection is formed between the end covers and the tube body through the lugs of the end covers and the recesses of the tube body. Each LED luminescence module also comprises an LED luminophor, an aluminum basal board, heat slugs, heat elimination rings and an LED drive circuit. The LED luminophor is arranged on the aluminum basal board. The reverse side of the aluminum basal board is connected with the heat slugs through fasteners. The heat elimination rings are enclosed outside the heat slugs and are integrated with the heat slugs in an interference way. The invention provides the LED fluorescent lamp which is connected with the LED luminescence modules and the tube body in a dismantle clip connection way, so the waste of resources is reduced and the environment is protected.