Abstract:Pain is one of the most common symptoms in cancer P8tients,especially in thosewith advanced or terminal diseases,and seeking good quality of life(QOL)is moreparamount in the process of palliative care,in which cancer pain relief and other symptomsmanagement is the most important.This paper tried to find the impact of cancer pain on patients'QOL.Our results showed cancer pain might influence patients'physical domain, psychological/spiritual domain and social domain respectively,thus influencing patients'globalQOL; Pain intensity and duration,not the degree of cancer pain relief, were the key factorsaffecting the QOL.