Sarcopenia animal model establishing method

The invention discloses a sarcopenia animal model establishing method. The method comprises the following steps of purchasing 4-week-old male mice, and feeding the 4-week-old male mice in different cages; measuring the body weight, body composition and muscle function of male mice once in pairs every month from the age of 1 month, randomly selecting three mice, performing intraperitoneal injectionof 7% chloral hydrate solution for anesthesia, taking out skeletal muscles of lower limbs, weighing, preparing a frozen specimen, transferring the frozen specimen into a refrigerator at the temperature of -80 DEG C, and storing for later use; fixedly observing and recording mice muscle function measurement results every month, and regarding that modeling is successful when a month mean value of the mice muscle function measurement results is reduced. The experimental difficulty, experimental conditions, economical efficiency and the like of the method are greatly improved compared with thoseof an existing model, an animal model which is stable, good in repeatability and closer to clinic in mechanism can be provided, and a good animal model sample is provided for studying the molecular mechanism, the pathophysiological characteristics and drug research and development of the sarcopenia.