The digital era has put forward higher requirements for the development of foreign language talents, and the blended teaching mode can precisely play to its advantages, integrate online and offline teaching resources, and cultivate high-quality foreign language talents. The project mainly adopts the questionnaire survey method, combined with the current status quo of foreign language education reform in colleges and universities, and researches the application of blended teaching mode in foreign language teaching in colleges and universities. It analyzes the current situation of the application of blended teaching mode in college foreign language teaching and the existing problems, concludes that strengthening the deepening application of blended teaching mode in college foreign language teaching can effectively improve the teaching effect, and puts forward improvement strategies for the current problems of blended teaching mode.