The traditional language lab has many shortcomings, for example, teaching function is simple, teaching resource is not sufficient, management model is not uniform, system upgrade is not convenient and so on. Combined with the characteristics of college language lab in teaching and management and the advantages of cloud computing, a new speech lab was designed based on cloud computing and application scenarios. The speech lab has the characteristics of strong function, low cost, easy management and high security. Using cloud computing environment of language laboratory can greatly enrich the teachers' teaching methods, change traditional classroom teacher oriented teaching, also make teachers and students form one-to-one teaching, asynchronous teaching mode is possible. It greatly improves students' learning enthusiasm and initiative and teaching efficiency, can effectively reduce the equipment maintenance and management, and realizes the efficient management.