Abstract: Applying methane absorption constant tester，experiment of high methane-content coal＇s temperature and water content influencing methane absorption quality was finished.Results showed that temperature and absorption constant a and temperature correction coefficient took on negative exponent relationship，took on exponent relationship with absorption constant b.Water content and a and reciprocal of moisture correction coefficient took on one linear relationship，and no fix relationship with b.The relational expressions of methane content，temperature correction coefficient and moisture correction coefficient were obtained.Above results had a guiding significance for further researching methane absorption quality and perfecting indirect methane measuring method.