［Objective］To prepare environmentally friendly silane modified polyether waterproofcoatings meeting the requirements of the group standard T/CBMF 105-2021/T/CWA 203-2021 SilaneModified Polyether Waterproof Coating.［Methods］ A silane terminated polyether（STP） resin was synthesized using different isocyanate based silane coupling agents as end capping agents and adifunctional polyether polyol with a relative molecular weight of 8000 as the main material. The effectsof factors such as the mass ratio of self-made STP resin to purchased resin，types of plasticizers，types and ratios of fillers，and addition amount of ammonia based silane coupling agent on the tensile strength，elongation at break，heat treatment performance，bonding strength，water absorption，and other properties of coating were explored.［Results］ When the mass ratio of STP to purchased silane modified polyether resin was 2∶2，polyether diol DL-2000D was used as the plasticizer，the mass ratio of nano calcium carbonate to ground calcium carbonate was 1∶1，and the addition amount of KH-792 was 0. 4 parts，the product showed the best comprehensive performance. In addition，by comparing the effects of different construction schemes，it was determined that the coating roll composite waterproof system composed of waterproof coating and polymer roll had better suitability and waterproof effect.［Conclusion］ The prepared silane-modified polyether waterproof coating showed excellent comprehensive performance and waterproof effect. When used in outdoors condition，the performance ofcoating could be further enhanced by selecting the appropriate protective isolation layer，indicating a promising application potential.