The invention belongs to the pesticide filed, relates to a liquid which can be applied to ultralow volume spraying, low volume spraying, or ultralow volume static spraying so as to achieve the effective control on crop insects, and specifically relates to an ultralow volume liquid containing sulfoxaflor and organic phosphorus pesticide. The ultralow volume liquid is composed of sulfoxaflor and an active component II, and the rest being surfactant and solvent, wherein the active component II is any one component selected from the following components: fenitrothion, quintiofos, triazophos, diazinon, phoxim, sumithion, profenofos, chlorpyrifos, malathion, and isocarbophos. The ultralow volume liquid has the advantages of convenient processing, long lasting period, high work efficiency, difficult generation of drug resistance of the target insects, low environmental pollution, reduction on pesticide and water consumption, and improvement on the pesticide utilization rate; and is capable of controlling a plurality of insects on paddy rice, wheat, corn, vegetable, tobacco, tea tree, fruit tree and sugarcane through the ultralow volume spraying, low volume spraying, or ultralow volume static spraying.