With the social and economic development, more and more emphasis is put on the harmfulness of the contaminated sites at home and abroad, and gradually established corresponding laws and regulations to manage the remediation of contaminated sites. The following simple analysis of Canada, the United States, Denmark and other foreign and China soil remediation guidelines for the main content, comparative analysis guidelines focus and work procedures. The technical guidelines in Canada and the United States focus mainly on the elaboration of specific repair techniques, while Denmark focuses on the process of soil remediation. The technical guidance in Canada and the United States focuses primarily on clarifying specific restoration techniques such as the Canadian Field Repair Techniques: Reference Manual, which classifies site restoration techniques into five broad categories (in situ soil and groundwater treatment, groundwater extraction, spilled gas Treatment, control of soil and groundwater in situ, and ectopic processing of excavated materials), respectively describe the sub-categories, precautions and cost analysis for each type of restoration technology. The New Jersey Guidelines for the Remediation of Contaminated Soils divide the soil remediation technologies into four categories (Excavation, Contaminated Soil Treatment, Reuse of Soil, Restrictions and Control Exposure), each introducing an introduction to each type of remediation technique, sub-classification , Key technologies, references and so on. The Danish Guidelines for Remediation of Contaminated Sites focus on the soil remediation process and are divided into initial investigation, site investigation, risk assessment, soil, air and groundwater quality standards, reporting, design, remediation measures and operation and assessment of 8 stage. The Guidelines for Soil Remediation on Contaminated Sites in China were promulgated in 2014, and the promulgation and implementation of the Guidelines provided the management basis and technical support for strengthening the environmental supervision and management of contaminated sites and regulating the technical schemes for soil remediation on contaminated sites. China's "Guidelines for Remediation of Contaminated Sites" is divided into the scope of application, normative references, terms and definitions, basic principles and working procedures, selection of repair mode, screening and repair techniques, the development of rehabilitation programs, the preparation of eight chapters of rehabilitation programs. Among them, the screening and remediation technology is firstly analyzed and compared with the use of remediation technology, combined with the pollution characteristics of contaminated sites, soil characteristics and selected remediation modes, from the aspects of technology maturity, suitable target pollutants and soil types, effects of remediation, time and cost Compare the existing advantages and disadvantages of soil remediation technology, focusing on the analysis of the applicability of various repair engineering applications. List analysis can be used to describe the principle of repair technology, the applicable conditions, the main technical indicators, economic indicators and the advantages and disadvantages of technical applications and other aspects of comparative analysis, you can also use the weighted scoring method. Through comparative analysis, put forward one or more alternative repair techniques for the next feasibility assessment. Then, the feasibility of alternative repair technology was evaluated through lab test, field pilot test and application case analysis. Finally, the effect, cost, time and environmental safety of soil remediation on contaminated site were analyzed from the aspects of technology maturity and applicable conditions Sex and other aspects of a comprehensive comparison of alternative repair techniques, choose to determine the repair technique to carry out the next stage of the development of rehabilitation programs. The development of rehabilitation programs includes several steps such as formulating soil remediation technology routes, determining process parameters of soil remediation technology, estimating the amount of remediation works on contaminated sites, compiling remediation options and formulating environmental management plans. Among them, the comparison and selection of rehabilitation programs mainly compare and select the main technical indicators, the project cost estimation and the secondary pollution prevention and control measures of the single rehabilitation technology and the multiple rehabilitation technology combinations, and finally determine the best rehabilitation plan.