For the light after excitation produced fluorescent material or after chemical treatment produced fluorescent material composition analysis, ring main purposes: 1. Conventional 1H and 13C measurements, and 31P detection, 15N, 29Sz, such as spectrum. Of all kinds, such as dept, HSQC, Chi Yu measurement 3. Available for active peptide, polypeptide protein solution structure of the 4. Compound structure and component identification of 5 can be multi-dimensional gradient experiment.