Abstract: For obtain the geological datum of Oceanographic engineering, we used the methods of areal geology datum collection, physics exploration, engineering drilling and Soil Test.Through Investingation of petroleum platform and offshore pipeline route in east bay of Liao Ning,we got some experience of the investiongation, and also made a good effect. The article briefly inrtoduced the investiongation meothds and contents, meanwhile explaind contents of the analysis and given evaluation about the areal geoloagy,the site of offshore pipeline route, the project of platform mudmat and the steel cannular pile.Through the investingation attemption of oceanographic engineering we also discoverd some existing problems in domain of the oceanographic engineering investingation at present.