Abstract: In view of increasingly serious damage caused by root knot nematode, root rot and stem rot on ginger, experiments were carried out on prevention and control of main diseases and insect pests of ginger with different concentrations of prescription Chinese herbal protective synergists and conditioning synergists．Results showed that mixed solution of 100 times prescription Chinese herbal protective synergists and conditioning synergists had the best effect on control of main diseases and insect pests of ginger and the highest yield of ginger．Therefore, in the future, Chinese herbal medicine should play a green, non-polluting, non-resistant role, in reducing use of chemical pesticides, and vigorously developing green prevention and control technology of ginger．