To reduce and control the cast-in-place crack on the wharf surface layer,we analyze the mechanism of cracks from aspectsincluding design,construction and raw materials,and put forward the technical path and quantitative requirements to reduce the shrinkage of concrete by optimizing the quality of raw materials.Taking perfect construction process management measures for reducing concrete drying cracks,we can reduce effectively irregular cracks in the surface layer concrete.,Combining with other design measures,we can control the wharf surface layer crack.