Liu graduated from China Medical University and studied urology in the United States for 3 years. He has a solid basic medical theory and clinical skills. Engaged in clinical, teaching and scientific research work of urology for more than 20 years, and was responsible for and participated in the completion of 8 provincial and ministerial scientific research projects. He has published more than 20 professional papers in international and domestic academic journals, and won many awards such as the Medical and Health Science and Technology Achievement Award of the Ministry of Health, the National Science and Technology Progress Award, and the Science and Technology Achievement Award of China Academy of Medical Sciences. , and was included in the China Dictionary of Famous Doctors for the first time. Starting from 1992, the first batch of experts enjoy the special allowance of the State Council. He has visited many famous universities in Japan, Canada, Britain, Germany and France as a visiting professor. He was invited to attend international academic conferences and studies in Germany, Britain, France, Australia, Singapore, South Korea and Taiwan Province Province of China, and participated in the compilation of Twelve Yu Ben, enjoying a high international reputation in the field of urology.