【Objective】To understand the effect of pendimethalin,prometryn and two kinds of medicament mixture to processing tomatoes and broomrape seed germination,processing tomato growth. 【Method】The seed treatment and pot experiment were used in the study.【Result】Seed treatment test results showed that germination inhibition rate of 33% pendimethalin oil 7 μg / m L,50% prometryn wettable powder 7 μg / m L and two kinds of medicament mixture 1 μg / m L to broomrape seed were high and the tomato seed germination inhi...