Abstract: Innovation is the soul for the development of geotechnical engineering discipline. Based on the researches and development of new geotechnical technologies made by the author and his team in recent years, the relevant work is summarized in the view of technological innovation. The aim is to solve the research problems in production-teaching-research aspect in the process of technological innovation. Firstly, the connotation and classification of technological innovation in geotechnical engineering are introduced. The following seven methods are involved the complementary advantages and disadvantages innovation method, the reverse thinking innovation method, the combination technology innovation method, the hope point listing innovation method, the analogy innovation method, the compulsory association innovation method and the divergent thinking innovation method. Secondly, the research background, process and technical content of each innovation method are introduced based on the research results of a series of innovation technologies. Finally, the research mentality and process of the production-teaching-research aspect are discussed through an example of technological innovation of PCC piles.