Biomedical signal processing plays an important role in life science research, p revention and treatment of diseases and medical instrument industry. Since biome dical signal is detected from human beings, it can be diverse and complicated du e to physiological and psychological reasons. This paper summarizes and classifi es the commonly used biomedical signals, features and the corresponding processi ng approaches. The applications of biomedical signal processing on electrocardio gram (ECG) and electroencephalogram (EEG) signal are introduced. New advances in biomedical signal processing in recent years are also deliberated. Finally, s ome thoughts are provided with respect to the future researches on biomedical si gnal processing.