n order to cope with the problems of conventional completion technology in ultra-deep fractured sandstone reservoirs, such as insufficient displacement and contamination of wellbore, a new clean completion technology of soluble screen was developed, that is, configuring soluble screens and release sub in the production interval. When replacing fluid in well completion, the soluble screen is used as tubing to substitute high-density killing fluid from the bottom of the perforated section to clean the wellbore. During reservoir reconstruction and production, it is used as screens to provide flow channels after dissolving the soluble plug by acid to reduce the fluid flow resistance. During workover, the release sub can perform segmented fishing by pressure shear pin，which has the advantage of reducing fishing difficulty and fishing time. The reliability of the key tool was verified by pressure test of soluble screen and release sub, dissolution test of soluble plug and the pin shear test of release sub. By comparing the characteristics of conventional completion string and soluble screen completion string, based on the field application of Well D304, it is found that the soluble screen clean completion technology has obvious advantages in fluid displacement, high-pressure gas flow, discharge area, and daily production, etc. The process is simple and convenient for field operation. The technology has been applied in 8 high-pressure gas wells in the ultra-deep fractured sandstone reservoirs in Kuqa Piedmont with a success rate of 100%, providing an important reference for the selection of completion techniques in the same type of wells.