The utility model provides a solar pest killing lamp for tobacco field, relate to physical disinsection equipment technical field, which comprises a bracket, the insecticidal lamp, the battery, solar module and controller, solar module installs in the top of support, the support includes the pole setting of vertical setting and first horizontal pole and the second horizontal pole that the level set up, the insecticidal lamp is located between first horizontal pole and the second horizontal pole, the insecticidal lamp includes the fashioned lamp holder of zinc alloy die casting, lamp shade and the ventilative worm box that stores up, the light trap has been seted up to the outer peripheral face of lamp shade, be equipped with the fan in the lamp shade, the bottom of lamp holder can be dismantled and is connected with the LED area source, the LED area source is located the top of light trap, the LED area source includes a circular light guide plate and two half circle ring fixing bases, the light guide plate constant head tank is seted up to the inside wall of half circle ring fixing base, be equipped with LED lamp pearl in the light guide plate constant head tank, lamp pearl locating hole is seted up to the light guide plate outer peripheral face, the light guide plate inserts the light guide plate constant head tank, LED lamp pearl embedding lamp pearl locating hole, the bottom of connection at the lamp holder can be dismantled to the half circle ring fixing base.