In view of experimental study of consolidation and creep coupling of Nanning expansive soil, explores the creep and consolidation characteristics of unsaturated expansive soils, obtains logarithmic form equations considering the consolidation and creep coupling, and fiting curves fit very well with the measured curves. Moreover, the creep equation considering consolidation effect is more in line with the actual situation of expansive soil than the equation obtained from rheological model. The research provides a new theoretical method for the deformation analysis of expansive soil.