If the testicles appear flaccid, it may be caused by kidney deficiency or kidney qi deficiency. Kidney qi deficiency is a symptom of kidney yin deficiency and may also be related to changes in the testicles, so you should usually do more physical exercise and daily life. In terms of diet, you should pay attention to nutritional matching, avoid spicy, stimulating and greasy food, it is best not to drink alcohol, you can eat more foods that nourish the kidneys and benefit the essence and strengthen the yang, you can also take drugs such as Jin Kui Kidney Qi Pill to regulate. If the normal sexual function is affected and there is discomfort, you should go to the hospital as soon as possible. Under normal circumstances, the testicles do not appear flaccid or tight. The scrotum is a cystic organ that contains the testicles, spermatic cord and appendages. The testicles are greatly affected by temperature, and the scrotum contracts when the weather is cold and relaxes when the temperature is high. This physiological regulation of the scrotum is beneficial to the human body and has a protective effect on the sperm production function of the testes.