The main technical points: the use of Trichogramma chilonis and Beauveria bassiana for prevention and treatment. 1, Trichogramma beetle control soy bean borer technology: the use of Trichogramma chilonis was the beginning of August, the first bee was released in the field, put 10,000 bees per acre, 5 days after the second bee, Put 10,000 bees per acre. Release method: First, according to the amount of bees to be released, the number of bees and the number of effective Trichogramma, the Trichogramma product was cut into small pieces of bee card, needle thread (sew) in the upper part of the soy planting rod put bee. 2. Beauveria bassiana against soybean borer technology: At the end of August, the larvae of the soybean borer were used to control the larvae before they were plucked into soil. The method is to dispose the Beauveria bassiana powder containing 3 billion viable spores per gram into the bacterial soil at a ratio of 2:50, and sprinkle it into the field or ridge table so that the larvae will be infected by the Beauveria bassiana and die.