The main measure of buttocks size is the hip circumference and waist circumference, the larger the hip circumference means the larger the buttocks. Measurement of hip circumference refers to the horizontal circumference of the most prominent part of the buttocks backward, according to anthropometric results, women’s hip circumference index is greater than men’s, the most prominent part of the buttocks is located in the most central position of the body. Measured by the ratio of waist to hip circumference, it ranges from 0.67 to 0.80 for women and 0.85 to 0.95 for men. After giving birth, fat mainly accumulates in the buttocks and thighs, which is difficult to remove, while after menopause, women will suffer from fat accumulation in the buttocks, waist and abdomen, which will also reduce the waist-hip ratio. To make the buttocks fuller, we have to keep the waist-hip ratio within a reasonable range, usually pay attention to not sitting for a long time, do not cross the legs, practice deep squatting movements, eat less sugary food, etc. Regarding the standard of buttock size, it is recommended to consult a doctor in the medical examination department.