To study the adaptability of SS316L as a raw gas gathering system material in high temperature and high pressure environment for underground coal gasification, corrosion risk analysis of SS316L under specific working conditions was carried out. It was highlighted that test data was not available for SS316L in terms of hydrogen damage and high temperature H2/H2S corrosion. Furthermore, elevated risk of stress corrosion cracking for SS316L should be considered under the specific working condition. High temperature H2/H2S corrosion coupon test showed that SS316L exhibited uniform corrosion under high temperature H2/H2S environment, with a low corrosion rate and no obvious hydrogen damage. Micro chloride stress corrosion cracks were observed after four-point bending test under simulated working condition. It was concluded that the major failure risk for SS316L should be chloride stress corrosion cracking, and recommendations regarding further research on gathering system material selection were given, which provided reference for selection of gathering pipeline material for raw gas from underground coal gasification.