Abstract: Land desertification is a significant challenge related to the survival and development of human society, and the prevention and control of desertified soil has always been a research focus of scholars worldwide. Biopolymers, characterized by their high viscosity, non-polluting nature and nutrient-rich composition, have the potential to generate substantial ecological benefits if utilized for stabilizing desert sand. Xanthan gum (XG), Guar gum (GG) and their equal mass mixture (MG) were selected to stabilize desert sand. The correlations between the unconfined compressive strength of stabilized desert sand and biopolymer-sand ratio, age and temperature cycles were analyzed and compared. The germination-promoting properties of biopolymers with various solution mass fractions were also examined. The results reveal that the unconfined compressive strength of stabilized desert sand with biopolymers increases first and then decreases with the increase of age, and decreases with the increase of temperature cycles. The comparison results of the unconfined compressive strength of desert sand solidified by three materials are as follows: XG > MG > GG; The growth promotion effect of the biopolymer solution with the mass fraction of 0.1% is better than that of the solution of 0.2%. The comparison results of the growth promotion effect of the three materials are: XG > MG > GG.