The effect of Pirorubicin Hydrochloride is mainly to kill tumor cells by interfering with DNA synthesis of tumor cells, which is mainly applied to leukemia, breast cancer, gastric cancer, lymphoma and so on. Pirorubicin hydrochloride is a commonly used chemotherapeutic drug, which mainly embeds base pairs and interferes with transcription, thus interfering with DNA synthesis and division of tumor cells. It has good therapeutic effect in leukemia, breast cancer, stomach cancer, lymphoma and other malignant tumors, and is often used in combination with other chemotherapeutic drugs. Pirorubicin hydrochloride also has side effects, such as cardiotoxicity, leukocyte decline, liver and kidney function impairment, hair loss, etc., the application of which should be evaluated under the guidance of a physician on a regular basis to avoid serious side effects.