With the increasing attention of the country to environmental protection，the price of medium-coarse sand and other high-quality fillers have also risen rapidly，resulting in a large increase in the cost of many land backfill projects.Aiming at the problems of high price and shortage of medium-coarse sand in the land backfill project，we research the land backfill and reuse technology of engineering waste soil，and apply laboratory test and field test to analyze the engineering properties and environmental protection characteristics of engineering waste soil，so as the utilization effect of engineering waste soil after environmental protection landfill. The results show that it is feasible to replace medium-coarse sand with engineering waste soil for backfilling，which meets the requirements of environmental protection and has significant economic and social benefits.