Light-emitting diode positioning device capable of avoiding short circuit caused by the contact of the pins

A light-emitting diode positioning device is suitable for installing a light-emitting diode. The light-emitting diode includes a light-emitting head and a plurality of pins. The light-emitting diode positioning device includes a base provided with a plurality of insertion holes, and a positioning base extending from the base. The positioning base includes an end face opposite to the base for allowing abutment of the light-emitting head, a surrounding surface extending from the circumference of the end face to the base, and a plurality of wall surfaces spaced apart from each other and arranged on the inner side of the surrounding surface to respectively define an insertion channel. Each insertion channel is spaced apart from the surrounding surface and communicated with a corresponding insertion hole to allow insertion of the corresponding pin. With the design of insertion channels for allowing insertion by the corresponding pins individually, it is able to avoid short circuit caused by the contact of the pins