The invention discloses a mixed-prepared pesticide agent taking rotenone and acaricide as major raw materials. The pesticide agent is prepared by the following weight percent: 0.05 percent -70 percent of the rotenone, 1 percent -70 percent of the acaricide and the other auxiliary agents which are mixed. The invention makes use of the synergism of the rotenone and the acaricide, so the pesticide resistance of pest mites can be overcame; the use rang of the medicament can be enlarged; the persistently effective period of medicament can be prolonged and the production cost of the pesticide can be reduced. The invention can greatly reduce the poisoning effect to all kinds of natural enemies and is in favor of lightening the destruction to ecology environment.