The invention discloses a 
diaphorina citri trapping agent and application thereof. On the basis that the 
diaphorina citri female extract has a 
trapping effect on 
diaphorina citri, the diaphorina citri trapper and the diaphorina citri pest 
trapping method are developed, namely, the diaphorina citri physical and chemical trapping technology combining 
insect pheromone and a color trapping technology is provided, and the diaphorina citri physical and chemical trapping technology can be used for preventing and treating the diaphorina citri pests. According to the method, the diaphorina citri female extract or 
methyl palmitate is used as a trapping agent, green prevention and control are carried out on the diaphorina citri in combination with a yellow double-sided pest sticking plate, operation and popularization are easy, in the diaphorina citri 
population prevention and control process, the use amount of chemical pesticides can be remarkably reduced, the damage rate of rutaceous plants is reduced, and the 
economic benefits of the diaphorina citri are improved. The 
biodiversity and natural enemy resources are protected, the prevention and control efficiency of diaphorina citri is improved, and an important way is opened up for a comprehensive prevention and control technical 
system of diaphorina citri pests.