A LED lamp structure includes a LED emitting module and a radiator module. The radiator module includes a holder with an elastic slice to connect electrically to a driver unit for supplying power. The driver unit may be disposed in the radiator module or within the LED emitting module. Therefore, the structure of the LED lamp is simplified. The modules can be replaced when they break down, without having to discard the whole set of LED lamp, thus eliminating the unnecessary waste, in achieving cost-effectiveness and environment protection.