At present, China's natural gas pipeline industry is faced with two major problems: most natural gas pipelines in the aging period shall be repaired or replaced, while the construction speed of natural gas pipelines does not match the growth rate of natural gas demand. In order to promote the development of natural gas market vigorously, therefore, the key issue to be solved is how to install, repair and replace natural gas pipelines efficiently. In this paper, the technical requirements on trenchless installation, rehabilitation and replacement of natural gas pipelines in China were analyzed. Then, relevant technologies widely applied abroad were introduced. Besides, the development direction of trenchless technologies was analyzed. And the following conclusions were reached. First, the trenchless installation technology of natural gas pipeline is now in the stage of improvement and is developing in the direction of being "applicable to various soils, capable of large-diameter pipeline installation and capable of high speed construction". Second, the problems with China are mainly the absence of quality standard on pipeline rehabilitation or replacement evaluation and the shortage of experienced designers and constructors of trenchless rehabilitation and replacement. Third, the trenchless rehabilitation technology abroad is applicable to middle-low pressure pipelines of city gas, but is restricted in high pressure pipelines, so the key to the problem solution is to increase the strength of lining materials. Fourth, it is necessary to establish a complete system of trenchless detection, installation and rehabilitation (or replacement) technologies, so as to increase the level of natural gas pipeline integrity management.