There are many reasons for the lump on the right side of the trachea, such as thyroid disease, lipoma, enlarged lymph nodes, sebaceous cysts and so on. 1. Thyroid disease: thyroid cysts, goiter, thyroid cancer, etc. can cause the phenomenon of lump on the right side of the trachea, which can be clearly diagnosed by ultrasound, CT and other tests. 2. Lipoma: the lump on the right side of trachea may also belong to lipoma, which can be single or multiple, usually without pain, and is benign, so no treatment is needed. 3. Enlarged lymph nodes: enlarged lymph nodes in the neck may cause lumps on the right side of the trachea, which may be due to the invasion of pathogens, and may be accompanied by a certain degree of pain. 4. Sebaceous cysts: a lump on the right side of the trachea may also belong to sebaceous cysts, mainly due to the local sebaceous gland secretion, resulting in the accumulation of follicular opening can not be discharged in a timely manner. There are many reasons why there is a lump on the right side of the trachea, and it is recommended to go to the hospital in time to improve the examination after the symptoms appear, and take standardized treatment according to the doctor’s instructions, and do not ignore the symptoms, so as not to delay the treatment of the condition.