Industry 4.0 intelligent services include cloud ruler, 3D Huajing, DUC designer platform and industry big data analysis system. 3D Huajing includes mobile APP and smart terminal equipment in the exhibition hall, which realizes many functions such as smart fitting, independent selection, online ordering, and online payment. The intelligent measuring device cloud ruler uses infrared distance measurement technology to quickly and accurately automatically generate a 3D model of the human body, and accurately measure 78 default body data. For special human bodies, it is possible to select points to measure on the 3D model to meet different user needs. The rapid development of emerging technology industries and digitalization provides a solid foundation for intelligent services. In the entire clothing field, measurement and fitting are a crucial link.