Affected by the natural environmental and human activity factors, significant seasonal differences appear on the regional scattering characteristic and ground deformation of sa-line soil. Interferometric decorrelation due to season replace-ment limits the conventional multi-temporal interferometric syn-thetic aperture radar (MT-InSAR) technique and its application in such areas. To extend the monitoring capability in the salt desert area, we select a vast basin of saline soil around Howz-e-Soltan Salt Lake of Iran as the study area and present an improved MT-InSAR for experimental research. Based on 131 C-band Sentinel-1A images collected between October 2014 to July 2020,1896 refined interferograms in total are selected from all interfero-gram candidates. Interferometric coherence analysis shows that the coherence in the saline soil area has an apparent seasonal varia-tion, and the soil moisture affected by the precipitation may be the main factor that leads to the seasonal variation. Sub-sequently, the deformation characteristics of saline soil under different environmental conditions and human activity factors are compared and analyzed in detail. Related deformation mechani-sms of different saline soil types are initially revealed by combin-ing interferometric coherence, meteorological data, and engi-neering geological characteristics of saline soil. Related results would provide reference for the large-scale infrastructure con-struction engineering in similar saline soil areas.