Recently, many departments have introduced measures to support institutions of higher learning, research institutes, enterprises and other institutions to develop research assistant posts. The Ministry of education has also issued a notice, saying that it will launch a special online recruitment campaign for research assistant posts for 2022 college graduates. Providing scientific research assistant posts for fresh graduates will help ease the current employment pressure. On the one hand, the fresh graduates are not far away from the campus, they are familiar with the rules and regulations of scientific research institutions and relevant professional knowledge, and can quickly integrate into the scientific research environment, bringing practical support to scientific research work; On the other hand, modern scientific research innovation is team work. For many scientific research groups, there are often some trivial but necessary routine work and repetitive work to deal with. Setting up a scientific research assistant post can liberate the core members of the team from these basic work and concentrate on innovative exploration. It is undeniable that many scientific research groups and some fresh graduates welcome the establishment of scientific research assistant posts. According to media reports, a university professor said: "the research group is a typical learning team. For those graduates who like the campus environment and learning atmosphere of the University, are interested in scientific research or want to continue their studies, the post of scientific research assistant is undoubtedly a better choice." In fact, the scientific research assistant system should not only be committed to the short-term goal of alleviating employment pressure, but also be based on the long-term goal of improving the scientific research talent training system and promoting scientific research innovation. Nowadays, with the diversification of youth employment concepts, the idea of "finding a stable job upon graduation" is no longer the obsession of all fresh graduates. It is a new way for many young people to approach employment by combining their own interests and abilities and establishing the employment direction in continuous attempts and explorations. The post of scientific research assistant has strong flexibility and has more free time, so that graduates have sufficient space to think about the future and accumulate energy for the next development. For the training and selection of scientific research talents, we can set up scientific research assistant posts to tap reserve talents with academic innovation potential. In the past, the selection of scientific research talents was more based on students' academic achievements in school, and students with better exam results could get more opportunities for further study and scientific research. However, classroom learning and scientific research innovation are different after all, and some "Xueba" find that their abilities and interests do not match the research content after engaging in scientific research. Providing students with short-term and transitional scientific research assistant posts is conducive to their real understanding of scientific research work, and then selecting young scientific research workers on the basis of two-way selection. Scientific research is an innovative work with exploration and uncertainty. The cultivation and selection of scientific research talents also need constant exploration and experimentation. Although scientific research assistant is a short-term and transitional job, we should also strive to improve the level of salary and welfare protection. At the same time, we should create conditions for scientific research assistants to truly integrate into the scientific research team, and provide potential assistants with opportunities to deeply experience the academic frontier. Perfect the post setting of scientific research assistant, combine talent investigation and training with daily scientific research tasks, and design a gradient entry channel for young people who are interested in scientific research. Only in this way can this system serve the growth and promotion of young people