The invention discloses a method for extracting tobacco seed oil from aromatic tobacco waste tobacco seed. The method utilizes a flash extraction technique, and extracts tobacco seed oil by extraction, extracting solution washing and dehydration, extracting solution concentration and drying. The method has the advantages of high extraction speed, mild extraction conditions, high extraction efficiency and the like, is simple to operate, and can easily implement industrial production. The obtained tobacco seed oil can be used in soap making and paint making industries, and can also be used in medicine and food industries. Therefore, the invention provides a reference method for the utilization of the aromatic tobacco waste tobacco seed and the development of the corresponding product.