It is of great significance to explore the teaching mode of architecture design course in the background of education informationization. Starting from the basis of blended teaching and constructivist learning theory, the paper expounds the methods and ways of blended teaching mode of architectural design course under the network environment. Taking architecture design course of grade 3 in Guilin University of Technology as an example, the paper has carried out the teaching reform from the following aspects:clearing teaching goals; adjusting the teaching process, to adopt the blended teaching mode; improving the teaching environment, to provide hybrid teaching content; enrich the teaching activities based on constructivist learning theory; making use of the advantages of network technology to improve the teaching evaluation method.