The invention discloses a pesticide preparation for controlling diamond back moth and other vegetable insect pests, comprising main agent which is mixture of the following active ingredients by weight percent: 0.1-20% of rotenone, 0.1-50.0% of chlorantraniliprole as well as missible oil, microemulsion, emulsion in water or suspending agent and the like which are prepared by the main agent and corresponding auxiliary agent. The pesticide preparation has good characteristics such as permeability, systemic property and the like, has high efficiency for the vegetable insect pests such as the diamond back moth and the like, can be used for controlling the vegetable insect pests such as the diamond back moth and the like at different ages, is thorough in killing insect pests, less in environmental pollution and low in production cost, and is suitable for chemical control of the vegetable insect pests such as the diamond back moth and the like.