With the further application of multimedia network technology to the field of education, the times of cyber-learning has quietly approached us, which definitely brings new insights into English writing instruction in middle schools. Based on the exploration of the online writing instruction model with the consideration of the characteristics of middle school students, the paper presents the contents and the procedures of online English writing instruction, and the design of suitable writing website which is directed toward5 the implementation of a process-oriented writing environmentwhere fit/I assistance is provided and dynamic interaction is fostered.