The author makes a detailed classification on land-types in H-H-H plain,according to the genesis,development and internal relations of landtypes Basic characteristics of land-types is also studied in many aspects involving the variety and regional distribution of land-types,the type evalution,and disturbance of human activitiesThrough the analysis on the statues quof (armland,forestry land and pas-tural land),the author summarizes the characteristics of land utilization,and urgent problems now confronting us in H-H-H plainProposal concerning reasOnal land utilization and development iD H-H-H plain is given below.(1)Tapping the latent productivity of land,and running a diversified economy (2)Adjusting the struture and location of cropland (3)Integratedly combating against middle-low production fields (4)Exploiting coastal salt-waste land.