Abstract: Soil chemical degradation is a serious threat to human survival and has become one of the most serious global problems. In order to increase food production, to slow down the rate of biodiversity decline and curb climate change, it is imperative to reverse the global trend of soil chemical degradation. Bioremediation is an environmentally friendly and cost-effective remediation strategy, and is becoming an important method for improving and restoring chemically degraded soils. In particular, plant-microbial combined remediation can make up for the shortcomings of single remediation methods and significantly improve the remediation efficiency of chemically degraded soils, which has broad application prospects. However, the plant-microbial combined remediation technology has different effects, mechanisms and influencing factors for different types of chemically-degraded soils. This paper reviews the causes, distribution and hazards of three major types of chemical degradation: soil nutrient deficiency, salinization and pollution, and discusses the effectiveness, intrinsic mechanisms and influencing factors of combined plant-microbial remediation in the management of three types of chemical degradation. For soil nutrient deficiency, microorganisms can enhance the nutrient utilization efficiency, strengthen nitrogen fixation and phosphorus solubilization, and increase soil fertility by stimulating plant roots and releasing secretions; The addition of saline-tolerant microorganisms that can adapt to extreme environments in salinized soils can improve plant uptake and utilization of salts by ameliorating soil structure and increasing nutrient availability. Microbial inoculation into contaminated soils can optimize rhizosphere environment, weaken the depressing effect of contaminants on plants and establish a mutual symbiotic relationship with plants, which finally improve the contaminant adsorption and degradation efficiency. In summary, large progresses have been made in plant-microbial remediation of chemically-degraded soil, providing theoretical references to achieve green, high-efficient, sustainable remediation of degraded soils.