The invention discloses equipment for metering the addition quantity of oil field auxiliary agents. The equipment comprises a first solution box, a second solution box, a third solution box, a fourthsolution box and a fifth solution box, wherein a first flow rate detection device and a first electromagnetic valve are sequentially arranged on a pipeline of the first liquid suction head; a second flow rate detection device and a second electromagnetic valve are sequentially arranged on a pipeline of the second liquid suction head; a third flow rate detection device and a third electromagnetic valve are sequentially arranged on a pipeline where a third liquid suction head is located; a fourth flow rate detection device and a fourth electromagnetic valve are arranged on a pipeline where a fourth liquid suction head is located; a liquid level detection mechanism is arranged in a buffer tank; the buffer tank outputs the oil field auxiliary agents to a destination through an output pipeline.According to the technical scheme, through the arrangement of a first mixing box, a second fixing box and a third mixing box, a corresponding flow path is selected so as to determine the mixing of several kinds of oil field auxiliary agents, so that the best treatment effect is achieved.