To further understand the drying dynamics of materials， a ‘technical platform for on-line determination of materials moisture content and state’ was designed and manufactured for on-line tracking and measuring the changes of moisture state， content and migration during drying process. The platform could be used to realize real-time， on-line and in-situ detection of moisture content， state and distribution of materials， thus obtaining time-dependent dynamic characteristics of moisture content， moisture binding state and proton density distribution. The test and analysis of typical drying process of Chinese dried noodles showed that the platform had good controllability， high stability and good repeatability. It could be used as an effective instrument for the drying kinetics exploration， new drying equipment manufacturing， and drying process design of various materials， including food products， agro-products， medicine， wood and volatile materials.