Neck sweating all the time is considered to be related to thyroid disease, restrictive hyperhidrosis, hypocalcemia, tuberculosis and other factors. 1. Thyroid disease: Hyperthyroidism, due to excessive synthesis and release of thyroxine, may cause thyrotoxicosis, resulting in accelerated metabolic activity of the body, which can cause excessive sweating and lead to neck sweating. 2. Hyperhidrosis: Hyperhidrosis is a localized or generalized sweating under the condition of normal ambient temperature, which may lead to excessive neck sweating. 3. Tuberculosis: Infection by tuberculosis bacilli, causing active tuberculosis, may appear excessive sweating or night sweating symptoms, leading to sweating of the patient’s neck or the whole body. Neck sweating may also have other reasons, it is recommended to go to the hospital to improve the relevant examination, follow the doctor’s instructions for standardized treatment.