The invention relates to a method for preparing putty powder excellent in cracking resistance. The putty powder is prepared from, by weight, 20-30 parts of white cement, 10-20 parts of calcium bicarbonate, 25-35 parts of talcum powder, 25-35 parts of ash calcium powder and 2-4 parts of adhesive powder. A preparation method of the adhesive powder includes steps: (1) main agent preparation, to be more specific, taking phenolic resin adhesives as a base material, adjusting a pH value to be neutral, heating to 50-60 DEG C, adding an appropriate amount of epoxy resin, keeping constant-temperature reaction for 5-15min, and cooling to the room temperature; (2) functional agent preparation, to be more specific, uniformly mixing an appropriate amount of propolis powder, water soluble glucan and an antioxidant, heating to 60-70 DEG C to form stable molten-state thick fluid, filtering particle impurities, and keeping for standby application; (3) adhesive powder finished product preparation, to be more specific, well mixing a main agent and a functional agent according to a proper proportion, and performing spray drying to obtain adhesive powder. The putty powder is reasonable in raw material selection and appropriate in compatibility and has advantages of excellent water resistance, bonding performances and antibacterial and anticorrosion performances as compared with existing putty powder.