Objective To analyze the structure and component of gouty tophus around joint，and provide basis to select solvent of gouty tophus and surgical cleaning method.Methods The sample of gouty tophus were obtained from 6 patients in 187 hospital of PLA from January 2016 to December 2017

which were rinsed by distilled water

and then dried and accepted other dispose.The sample were analyzed by Fourier Transform Infrared Spectroscopy(FTIR)，scanning electron microscope and thermal gravimetric analyzer. Results Sodium urate was the main component of the uratoma

the proportion was 56%;the organic component was about 14% of the uratoma.The microstructure of the uratoma under scanning electron microscope have two forms

the one looks like column crystal and the other like granules head up to lump. ConclusionThe main component of the gouty tophus are sodium urate and organic tissues

the possible solvent should react on the both of them.