Those who focus on auxiliary research and courses are positioned as assistants.

Teaching assistants in Japan generally don't have their own research rooms, but rely on a professor or associate professor. The work done is a bit like the combination of doctors and technicians, that is to say, the laboratory chores should be responsible, students should help with the work, and experiments should be done by themselves to produce results, because this process is the accumulation of their application for associate professors in the future. In addition, once the professor retires or finds another job in Japan, the laboratory will be dissolved and the teaching assistant in that laboratory will find another job. As for wages, they are similar to those in Hou Bo.

The titles of Japanese university teachers are only professors, assistant professors and teaching assistants (equivalent to teaching assistants). In 2007, the assistant professor was terminated and renamed as an associate professor.

The assistant professor's duty is to assist the professor.