| China in the development of offshore oil fields later than other countries, most oil fields in shallow waters, due to the effect caused by the nonlinear shallow wave, the nonlinear wave load has a great influence on the pipelines buried shallow. The study of the stability of submarine pipelines need to give full consideration to the characteristics of the shallow water waves. Because the total vertical wave force acting on the pipeline is one of the main environmental load, we should take full account of the wave force which caused by the shallow water waves in the beginning of the pipeline design in our country. Taken pore water and compressibility of the seabed soil into consideration, and based on Biot consolidation theory and the first-order approximate elliptical cosine wave theory, seepage force caused by nonlinear wave around buried pipelines in shallow water was derived by the way of variables separation, and the analytic solution of wave force around buried pipelines was proposed, and the solution was compared with test result. The calculating results showed that the seepage force around buried pipelines assumed a Sine distribution under the effect of cnoidal wave, and the conclusion agreed well with the experiment results. The theory model has certain feasibility and engineering value.