Risk analysis and assessment of entry and spread of three economically important insect pests in the fruits and vegetables imported from Taiwan were conducted in order to provide strategies and tactics for early warning and control of the pests in the Mainland of China. Based on the available data and mathematical models, we analyzed and assessed the entry and spread, infestation and damage to their hosts, and potential geographical distribution in the Mainland of China of the three target pests, Bactrocera dorsalis (Hendel), Liriomyza trifolii (Burgess) and Aleurodicus disperses Russell. We found that time intervals between the first record in Taiwan and the first record in Mainland China were different, with 22 years for B. dorsalis, 17 years for L. trifolii, and 8 years for A. disperses. B. dorsalis and L. trifolii were widely distributed soon after they were found in Mainland China and caused significant damage to the production of fruits and vegetables in some regions. To date, however, the distribution of A. disperses has been limited in the Hainan Province and the infestation has been limited to some specific sites in the province. The three species are predicted to have a great potential of extending their geographical distribution in Mainland China. Based on our result, several strategies and tactics for management of the pests of fruits and vegetables imported from Taiwan are proposed, including risk analysis of potential invasive species, port inspection and quarantine, effective monitoring and control of the invaded pests in the fields.