The invention relates to the field of lighting lamps, and discloses an LED lamp optical module. The LED lamp optical module comprises an LED light source, a lamp support and a light-match lens. The LED light source is arranged in the center of the lamp support, the light-match lens is arranged on the lamp support and is in a horn shape, and the reflection surface of the light-match lens is of a right-angle prismatic structure. The LED lamp optical module is simple in structure and capable of carrying out total-reflection processing on light emitted by the LED light source, and the effects of high light-emitting efficiency, low production cost and simple production process can be achieved.