While ensuring the quality of engineering construction, we should also avoid unnecessary engineering losses that may be caused by rainfall. In view of this, this paper mainly studies the earthwork, hoisting engineering and equipment power consumption in the rainy season construction technical scheme of building engineering, and puts forward corresponding suggestions based on the actual situation. On the basis of a comprehensive analysis of the problems and difficulties in rainy season construction, this paper explains the specific technical scheme of rainy season construction and verifies it with examples, ensuring the safety and quality of construction projects and laying a solid foundation for the follow-up work.