[Aim] To clarify population dynamics of Diaphorina citri in different types of citrus orchards will be beneficial for controlling Huanglongbing and citrus psyllid in Fogang County, Guangdong Province.[Method] The population abundance and dynamics of D. citri under different management measures were compared through systematic investigation in Fogang County from 2015 to 2016.[Result] The population of D. citri was small from January to March. Population size of D. citri began to rise with the growth of young shoots of citrus, reaching the peak from June to September and then decreased rapidly at a low level after October. The seasonal population dynamics of D. citri in 2015 was almost in accord with in 2016, but the population size of D. citri had obviously differences between 2015 and 2016. There were significant differences in population size of D. citri among three different types of citrus orchards. The highest population size of D. citri was in the orchards with no management and followed by in conventional water and fertilizer management orchards, both of which were significantly higher than conventional water, fertilizer management and chemical control orchards.[Conclusion] To some extent, chemical pesticide could control the population size of D. citri. Timely cleaning of the orchards with no management was essential for controlling the spread of Huanglongbing and citrus psyllid.