The invention provides a compound bio-
fertilizer containing ardealite and application thereof. Compound bio-
fertilizer is obtained through following steps: adjusting pH value of the ardealite to 4-5 via 
lime water, 
drying and crushing to 200-400 sections; 
drying animal 
manure, 
cutting crop straws into sections and then 
drying; mixing and fermenting the ardelite, the animal 
manure and the 
crop straws; controlling cultivation temperature to be at 28-32 DEG C after medium sterilization, sequentially inoculating various beneficial microorganisms, respectively cultivating the same, mixing mixed 
bacteria with prepared fermenting mixture by weight ratio of 1:300-1000 after completing cultivation, adding water to adjust 
water content to 35-45%, stirring the water , stacking the mixture for 3-5 days for co-
fermentation, further adding water to adjust 
water content to 20-30%, and then crushing to obtain the compound bio-
fertilizer. The compound bio-fertilizer is mainly applied to field crops and applied to improving 
saline-
alkali soil, acid soil and coastal soil structures.