The structural imbalance of microbial communities in soil is one of the important factors for the occurrence of obstacles for tomato continuous cropping. This article reviewed the changing characteristics of microbial communities in soil and the reconstruction techniques in tomato continuous cropping to study the mechanism of obstacles for tomato continuous cropping and promote the sustainable development of the tomato industry. The decrease in microbial diversity in soil under tomato continuous cropping and the structure shift of microbial communities in soil from "bacterial" soil to "fungal" soil are the main reasons for the occurrence of obstacles for tomato continuous cropping. Rotation and intercropping， grafting， soil disinfection， and application of organic fertilizer can reconstruct the structure of microbial communities in soil under tomato continuous cropping， helping to reduce the harm of obstacles for continuous cropping， especially rotation and intercropping of leguminous crops are more conducive to reducing the harm of obstacles for tomato continuous cropping. So far， studies have found that functional microorganisms including Arthrobacter， Bacillus， Pseudomonas， Solirubrobacter， and Trichoderma spp. are beneficial in overcoming obstacles for tomato continuous cropping. The development of bio-organic fertilizers combined with organic fertilizers for reconstructing the microbial communities in farmland soil is a highly promising technical measure for biological prevention and control of obstacles for continuous cropping. However， how to ensure the colonization， survival， and large-scale reproduction of functional microorganisms in the application of bio-organic fertilizers in different environments is an important bottleneck problem that urgently needs to be solved in this technology.