Experimental station of biological mass spectrometry introduces the extreme ultraviolet laser beam generated by Dalian coherent light source into the high-resolution mass spectrometry, which could offer a high efficiency in photodissociation of biological molecular such as peptides, proteins, carbohydrates, and lipids. Through the activation of biological molecular with high energy photons, ultraviolet photodissociation (UVPD) could directly dissociate the backbone of biological molecular and generate abundant fragment ions, which are different from the conventional fragmentation methods such as HCD and ETD. The activation and dissociation of the biological molecular is fast typically in the timescale of ns or ps, and the fragment ions generated by UVPD could give out the structural information of the native protein ions.