Marine-terrestrial interactive deposits are widely distributed in the coastal cities, and the mechanical properties are different from the other deposits. Considering the undistributed samples of marine-terrestrial interactive deposit in Dalian, the creep behaviors of Dalian marine-terrestrial deposits were studied according to one dimensional creep tests. Based on the test results, the creep equation was established which considered the primary consolidation and secondary consolidation in the meantime. The results showed that, Dalian deposits have typical nonlinear creep behavior. With the increasing of consolidation pressure, the strain is increased. The longer the stability time is , the more obvious demarcation point between primary and secondary consolidation is. The deposits belong to medium to high secondary compressibility soil, and the secondary consolidation coefficient is decreasing with the increasing of consolidation time, and increasing as the consolidation pressure increases. The ratio of secondary consolidation coefficient to compression index in different depth ranges from 0.033 to 0.058, which conforms to Mesri conclusion. The tests results agree well with the calculation results, which showed that the creep equation is suitable for describing the creep behaviors of Dalian marine-terrestrial interactive deposits.