Postharvest diseases of citrus caused by pathogenic fungi make great losses to citrus industry. Dynamics of postharvest diseases of nine different kinds of citrus fruit from 14 areas during storage were investigated and the pathogens were identified. The results showed that green/blue mold,sour rot,stemend rot,anthracnose and black rot were observed. The green/blue mold was the main disease. Green/blue mold is dominant on mandarins and sour rot is common on sweet oranges. The incidence of postharvest disease after 60 days’ storage is closely correlated with the rainy day during the one week before harvest. Therefore,harvesting on sunny days is beneficial to reduce the incidence of postharvest diseases. It is indicated that more targeted postharvest treatments can be taken according to different types of citrus varieties based on their main disease types.