An LED lamp includes a lamp body and a plurality of LED modules. The lamp body defines a pair of inserting holes in each of two opposite sides thereof. The LED modules each have a pair of inserting pins at a side thereof and a pair of inserting holes in an opposite side thereof. In assembly, the LED modules are electrically connected to the lamp body via inserting the inserting pins of the LED modules into the inserting holes of the lamp body and into the inserting holes of adjacent LED modules. In disassembly, the LED modules are detached from the lamp body and the adjacent LED modules via pulling the inserting pins of the LED modules out of the inserting holes of the lamp body and the adjacent LED modules.