Glacier ablation is a serious environmental problem associated with global climate warming. Hailuogou Glacier Park has appreciation and scientific value,it is a typical monsoonal temperate glacier in China as well as the best known mountain glacier in the world. According to the observation,Hailuogou Glacier has been ablating for a hundred years,it is necessary to restrain the glacier ablation continuously. First the main geological features of the Hailuogou Glacier are introduced in three aspects: scale,structure and distribution of the glacier,its forming process and the mass balance condition are discussed. Based on three factors which have a close relationship with glacier ablation: the temperature,the elevation and the components of the material covering the ice,aimed at the grim situation of Hailuogou Glacier ablation and geological features development and conservation state,gives five pieces of recommendations to prevent the glacier ablation.