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目的：揭示中国高龄人口（≥８０岁）年龄别性别比的特点。方法：对１９５３年、１９６４年、１９８２年和１９９０年四次全国人口普查的年龄性别人口取ｘ±２岁年龄区间移动平均法修匀以调整高龄人口年龄别性别比曲线。结果：年龄别性别比曲线随年龄单调递减在进入９０岁以后的高龄段迅速上升，且转折点相对稳定。结论：老龄人口男性年龄别死亡率稳定高于女性的现象不适用于９０岁以后的高龄人口。
Purpose: To reveal the age-specific sex ratio of the Chinese aged population (≥80 years old). METHODS: The age-sex population of four national population census in 1953, 1964, 1982 and 1990 was taken as the moving average method of the age range of ± 2 years to adjust the age-specific sex ratio curve of the elderly population. Results: The age-specific sex ratio curve decreases monotonously with age and rapidly rises after entering the 90-year-old age segment, and the turning point is relatively stable. Conclusion: The phenomenon that the age-specific mortality rate of males in the elderly population is consistently higher than that of females does not apply to the elderly population after the age of 90.