The artificial nudation of waste rock disposal in mines not only occupies large areas of land,damages vegetation in the mining area,but also pollutes the environment and breaks ecological balance.In a case study of the gravel pit in the waste rock disposal of Paishanlou Gold Mine,the paper introduces the theoretical basis,design ideology and technical challenges of the ecological restoration engineering.According to the ecological ideology of nature imitation and nature stimulation,modern ecological engineering and technology are applied,and the ecological environment of small hills and shallow valley landscape in the gravel pit in the waste rock disposal is restored.Through investigation of the original land before the waste rock disposal formed and the surrounding ecological environment,measures including slope cutting,biological environment forging,soil import,vegetation screening and planting are taken,the ecological corridor,hilly landscape,wet lands and water systems are restored,and the typical plant species fit in local ecological characteristics are rebuilt,ensuring the unity and integrity of ecological system.