The opening of the three-dimensional platform of the national employment service for college students is an important measure to strengthen the government's public service function and innovate the employment service system for graduates. The purpose of constructing a three-dimensional platform for national college students' employment service is to use the resources of network technology, information technology and national college students' employment system to solve the problem of information asymmetry between supply and demand through the combination of online and offline services. The "platform" will mainly focus on the needs of students and employers, give full play to the advantages of education and related departments and industries, and provide various services to improve the level of employment counseling in various provinces, cities, industries and universities.