There are a large number of glacier relics in Southeastern Tibet， forming a large number of loose accumulations， which are prone to disasters. There are many voids in the moraines， and the structures are unstable. The technology of grouting reinforcement by steel screen pipe for moraines was studied with discussion of the construction technologies， the reinforcement mechanism， as well as the design method. The numerical simulation was also implemented. The field tests were performed， and the results showed that the effective reinforcement radius of shallow surface grouting of moraine is 20~55cm； the soil cohesion， internal friction angle and compression modulus improved after grouting reinforcement； the vertical permeability coefficient of the soil becomes smaller； the preferred grouting pressure is 0.5 to1.0MPa， the water/cement ratio 2、1， the ratio of the grouting hole spacing to the effective reinforcement radius not greater than 8. Through field tests， a screen pipe grouting process has been formed on the basis of the 3.5 cubic air compressor， YT28 rock drill， hollow self-drilling bolt and pneumatic grouting machine， which is suitable for inconvenient traffic and poor construction conditions.