Refers to the traditional medical system of China, including herbal medicine, acupuncture, and other practices.
She is majoring in Chinese medicine at university.
Chinese medicine emphasizes the balance of the body.
東洋医学 is a broader term for 'Oriental medicine' that includes Chinese, Korean, and other East Asian traditional medicines, whereas 中医学 is specifically Chinese.
Compound of 中 (ちゅう, 'China') + 医学 (いがく, 'medical science').