The invention discloses a formula of a Hui nationality traditional Chinese medicine pseudostellaria heterophylla stomach cancer rehabilitation oral liquid and a preparation method thereof. The oral liquid belongs to a green high-tech Chinese herbal medicine for treating a late gastric cancer, particularly a late gastric cancer which cannot be treated because an operation cannot be performed due to various reasons. The oral liquid belongs to a traditional Chinese medicine oral liquid formed by mixing Chinese herbal medicines, such as pseudostellaria heterophylla, radix salviae miltiorrhizae, camptotheca acuminata decne, fructus ligustri lucidi, ligustrum lucidum, agrimonia pilosa and entada phaseoloide according to a certain ratio, boiling with water, extracting and concentrating, mainly treats a stomach cancer, also treats digestive system cancers, such as a pharyngolaryngeal cancer, an esophagus cancer, a cardiac carcinoma, and a colorectal cancer, and has the characteristics that drug are tasteless, the dosage is moderate, and most of selected drugs are proved, through modern medical pharmacological experiments, to be capable of treating cancers.