On the basis of elastic-plastic damage model of cement consolidated soil, the authors took organic contents into reasonable damage variable evolution equation in order to seek relation between the organic contents and parameters in the equation, and established the elastic-plastic damage model of cement consolidated soil considering organic contents. The results show that the parameters change correspondinglywith difference of the organic contents. The higher the organic contents are, the less the valves of the parameters such as elastic modulus ( E) , material parameters ( K, n) and damage evolution parameter (ε) become, but the larger strain damage threshold value (εd ) of the sample is. Meanwhile, the calculation results obtained from established model are compared with the test data in the condition of common indoors test, which is testified with reliability.