The invention discloses a processing method for Oplismenus compositus-sophora flower composite tea powder. The Oplismenus compositus-sophora flower composite tea powder is prepared from Oplismenus composites and sophora flowers through raw material preparation, color protection, thermal extraction, ultrasonic extraction, mixing, concentration, finishing and packing. The Oplismenus compositus-sophora flower composite tea powder prepared by using the method uses widely available Oplismenus composites and sophora flowers as raw materials, so production cost is lowered; through enzyme deactivation with steam twice, inherent bitter and astringent taste of Oplismenus composites is eliminated, and the taste of the finished tea powder is improved; active substances in the raw materials can be totally preserved via thermal extraction and ultrasonic extraction; a sublimation drying method is employed to reduce loss of nutrients and improve the utilization rate of the raw materials; and the finished tea powder is has health-care effects like heat-clearing effect, cough-relieving effect, skin-moistening effect and beautifying effect.