Abstract: A light-emitting diode (LED) lamp capable of multilateral connection includes a cuboidal housing having a plurality of light-permeable sides and a plurality of connecting sides adjacent to the light-permeable sides. The light-permeable sides are arranged in a C shape on the housing. The connecting sides are arranged in a C shape on the housing and are located where the light-permeable sides are absent. An LED module is provided in the housing, and the light emitted by the LED module can pass through the light-permeable sides. Each connecting side is provided with at least one fastening portion so that the housing and external similar housings can be assembled into a single unit of an arbitrary and changeable configuration through connection between the corresponding fastening portions of the housings, thus providing both convenience of use and fun.