Abstract: We designed a questionnaire and investigated the sleep quality andsleep regularity of 433 nurses of 20-45 years old. The questionnare wasfocused on the following 6 categories: general evaluation of sleep, whetherthe subjects often lose their sleep and have to use spleeping pills, whetherthey can fall asleep easily, how well they sleep, to what extent they canremember what they dreamed, and their vigor condition when they areawake. The results show that in terms of total scores and for almost all thesix categories, there is a significant difference between the shift-workgroup and the day-work group. Poor sleep quality and poor sleep regula-rity are found with the shift-work nurses after their night work. The sleepquality of both the shift-work and the day-work nurses tends to deterio-rate with the increase of age and of work years. It is also found thatthere is a recuperation of sleep quality with the nurses who changed today-work 3 years ago after having worked on shifts for many years.

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