The causes of cold feet in children include external wind-cold, deficiency of spleen and stomach (spleen and stomach are weak and cold), and deficiency of kidney yang (lack of yang qi in kidneys), etc. If there is an external wind-cold, there may be cold feet, accompanied by generalized chills (fear of cold) and fever, and lack of sweating and headache. It is recommended to combine the systemic symptoms to make a clear diagnosis. 1. Exogenous wind-cold: If children do not pay attention to warmth due to weather changes, or if they are weak and have exogenous wind-cold, they may have cold feet, accompanied by generalized chills and fever, no sweating, headache, body ache, nasal congestion and runny nose, etc., and can be treated with Thorns, Prevention and Defeat of Toxin Dispersant and other medicines. 2. Cold deficiency of spleen and stomach: if the stomach pain is caused by overeating cold food, which damages the yang qi of spleen and stomach, there will be cold deficiency of spleen and stomach, and there will be lack of warmth of limbs, tiredness, fatigue, abdominal pain, warmth and pressure, diarrhea, etc., then Rejoice in China Pill can be chosen as the treatment. 3. Kidney yang deficiency: If children are not endowed with sufficient endowment (inborn constitution and poor functioning), or if they over-eat cold and raw food, etc., they can also damage kidney yang and suffer from kidney yang deficiency, which can be seen as soreness and coldness of the waist and knees, lack of warmth of the limbs, and even more so of the lower limbs, etc., and can be treated with medicines such as Prickly Wujia Tablets. The above drugs are recommended to be used under the guidance of a doctor. Children with cold feet are advised to consult a doctor for evidence-based treatment under the guidance of a doctor.