The invention discloses a 
traditional Chinese medicine composition for preventing and controlling 
crop pest and preparation method of the 
traditional Chinese medicine composition, relates to an agricultural medicament for preventing and controlling 
crop pest, and belongs to the field of novel pesticides. The 
traditional Chinese medicine composition is characterized by comprising the following raw materials by weight percent: 5-10% of Chinese honeylocust fruit, 5-10% of radix scutellariae, 15-20% of 
radix isatidis, 5-10% of liquorice, 5-10% of caulis bambusae in taeniam, 25-35% of longstamen 
onion bulb, 15-20% of stabilizer, and 5-10% of penetrating agent; the above raw materials are decocted for 40min. The traditional Chinese 
medicine composition has the beneficial effects that effective ingredients of the traditional Chinese 
medicine preparation can directly achieve 
disease tissue of the tree body to kill the germ cells through reasonable ratio; not only can the germs be completely killed, but also the 
bark and the tree body cannot be injured; the field dosage is greatly reduced, the environment 
pollution and 
pesticide residue are effectively reduced, and the production cost and the use cost are lowered; the action mechanisms of the effective ingredients in the sterilizing composition are different from each other so that the 
disease resistance is overcome and the production of the 
disease drug resistance is delayed.