Abstract: Utilizing the coefficient of variability (CV) of the monthly distribution of deaths as an index of assessing the monthly influence on death, this paper studied the monthly distribution of death in dif- ferent age group in both sexes in China in 1989. The results showed that the age group-specific death in China had the tendency of monthly concentration, the monthly distribution of death changed gradually with age growing, and both sexes had similar monthly distribution of death, mortality rate was not completely consistent with the degree of monthly influence on death. The monthly influence on death was possibly determined by the seasonal rhythms of the state of physiological function and the types of disease and their degree of danger at certain age.

Key words: Death; Monthly distribution; Coefficient of variability ( CV)