Service has emerged as the major element of the modern world’s economies, especially in the ICT industry. But the theory of service science is far behind the reality. Service science should provide theoretical basis and analysis framework for the service development. Through analyzing service science theory and current literatures, combining ICT companies’ real situation and development challenge, this paper offers several suggestions for service development, and builds the general service portfolio for ICT companies. On the other hand, this application in ICT companies will facilitate service science innovation, education, research application and development.