With the help of intelligent service system, the users can be provided with service of remote diagnosis on production and equipment. This system can use abundant data from cement production line, together with theoretical basis, to predict and analyze the operation state of production line and further optimize the operation of production line. Based on the data from the Center Data Server dedicated for project design, the network technical center, including diagnosis expert library, product quality diagnosis expert library and equipment diagnosis expert library etc., can be established to comprehensively understand, track, diagnose and optimize the operation of production line, and offer users remote technical support from senior experts through network services. Relying on intelligent service system, users can improve equipment reliability, reduce equipment risks, achieve energy-saving and cost-reducing, and ensure normal and stable production, save equipment O&M costs and realize full control of equipment state.