Pimples and yellow water on the nose may be caused by eczema, acne, impetigo and other factors. 1. Eczema: Eczema may be induced if it comes into contact with allergens such as animal hair, pollen, dust mites, etc., which may lead to the appearance of pimples, blisters, redness, swelling and erosion of the skin of the nose, which may be accompanied by yellowish plasma oozing out. 2. Acne: If the hair follicles or sebaceous glands around the nose are infected and become inflamed, it may lead to localized skin symptoms such as pimples, inflammatory papules, pustules, pain, etc., and the papules may ooze yellowish water when they break out. 3. Impetigo: If infected by Staphylococcus aureus and Streptococcus b hemolyticus, it may lead to acute suppurative impetigo, which initially appears as erythematous spots or small pimples on the face and limbs, and then turns into pustules, which may ooze out yellow liquid after rupture. If there is a pimple on the nose with yellow fluid, consult a doctor in time and treat it after diagnosis and clarification.