Dr. Liu has engaged in clinical work of oncology for 36 years. He is proficient in professional theories of oncology, mastering in diagnosis and treatment of early stage and difficult cases of malignant tumors, and comprehensive treatment of common or complex tumor patients. He is especially good at tumor chemotherapy, biological immunotherapy, molecular targeted therapy, as well as psychological counseling and psychological treatment of cancer patients. He led his oncology department team to carrying out the chemotherapy, targeted, minimally invasive (tissue biopsy by ultrasound and CT and internal cavity perfusion), biological treatment and traditional Chinese medicine technology. He also advocates "economy, safe, effective" integrated treatment of common malignant tumor diseases such as lung cancer, head and neck cancer, breast cancer, colorectal cancer, malignant lymphoma, primary or metastatic liver cancer, cervical cancer, ovarian cancer, stomach cancer, pancreatic cancer etc., which obtaining the satisfactory curative effect.