If the testicles are hot and humid, the possible causes are: first, wearing too thick or poor local heat dissipation, maintaining a posture for a long time, such as sitting or squatting for a long time, can lead to poor local heat dissipation and heat and humidity, especially when the external temperature is high or when wearing warmer clothes, there can be poor local heat dissipation and humidity; second, when there is a local skin infection, there can be heat and humidity, scrotum When there is local skin infection, there can be fever, dampness, eczema of the scrotum or fungal infection, etc., there can be skin ulceration with exudation, etc., accompanied by local itching and pain; thirdly, when there is tuberculosis, there can be generalized night sweating, accompanied by testicular and scrotal dampness, patients often have low fever, accompanied by local dampness; fourthly, patients who have consumed alcohol or have been exposed to related alcohol products, or have generalized febrile diseases, there can be local capillaries dilatation and lead to enhanced heat dissipation and dampness.