The finger lancing in children usually does not squeeze out clear liquid, and the finger squeezing out clear liquid is mostly the presence of blisters on the fingers, which may be a manifestation of diseases such as ringworm, viral infections herpes, and eczema. It is recommended to take the child to a dermatologist at a regular hospital for examination and targeted treatment.1. Ringworm: The main causative microorganisms are Trichophyton rubrum, Trichophyton spp. and Flocculina epidermidis, etc. Ringworm clinically manifests itself as scattered small blisters on the hands, which can squeeze out clear liquid and are usually accompanied by itching. It can be treated with antifungal medications such as clotrimazole cream, naftifine ketoconazole cream, etc. as prescribed by your doctor. During the treatment period, you should avoid sharing towels, cups and other items with others; 2. Viral infection type herpes: it is caused by viral infection and is clinically characterized by clusters of small blisters containing clear liquid on the skin or mucous membrane, which can be squeezed out with clear liquid. It can be treated with antiviral medication, such as acyclovir tablets, as prescribed by the doctor. Avoid contact with alkaline substances on a daily basis, keep the affected area as dry as possible, eat a light diet and avoid spicy and irritating food; 3, eczema: eczema is a delayed metamorphosis caused by complex internal and external factors, internal factors include chronic infection in the body, emotional stress, etc., external factors such as eating fish, shrimp, inhalation of pollen, dust mites, etc. Different degrees of blistering with erythema may occur. Eczema attacks should be identified and avoid contact with the trigger, eczema can be coated with ointment, such as zinc oxide ointment, but also available potassium permanganate solution and boric acid solution wet compresses to reduce redness and swelling. Severe cases can be treated with anti-allergy drugs such as chlorpheniramine, ipratropium and benadryl under the guidance of a doctor.