The invention discloses a data processing method and device and a teaching material management information system, and belongs to the field of online data processing methods and devices and teaching material construction and management. The data processing method comprises the following steps: S1, a user side acquires a transmission protocol of server storage equipment through a communication protocol and stores the transmission protocol on a memory of the user side; S2, various types of data are input by a user and the data is stored in a user-side memory; S3, the user side performs identification, determination, conversion, transmission and the like on the data stored in the user side based on a transmission protocol; the method is applied to a device of a user PC and applied to an occupational teaching material management information system to achieve teaching material management and internet fusion, and therefore one-stop service of teaching material construction and management isachieved.