The problem of staying up late is common around us, but it is not easy to correct it. In this
study, qualitative research methods were used to analyze the staying up late situation of graduate students.
The interview materials show four major areas: reasons for staying up late, types of staying up late, factors
that hinder the change of staying up late and the generation of staying up late. In the field of reasons
for staying up late, there are several sub-fields, such as interpersonal influence, family environment,
entertainment activities, personal factors, school arrangement, and emotional feelings. It is interesting to
find that most participants associate staying up late with daytime freedom. In the field of staying up late,
there are two sub-fields: getting rid of the control of elders and emotional problems. Combined with the
age group of participants staying up late, it is found that staying up late is a rebellious behavior.