This study was conducted as per "Suggestions on Identification and Assessment of Environmental Pollution Damages" (Huanfa ［2011］ 60) along with its appendix "Methods Recommended for Estimation of Damage Quantity after Environmental Pollution" (edition I),and "Interim Measures on Pollution Damage Assessment after Environment Emergency" (exposure draft) issued by China Ministry of Environmental Protection.One accident of odor gas pollution caused by a company in Rizhao City was investigated following the route of pollution damage assessment.The main pollutants were identified through field investigation and laboratory monitoring.On this basis,the damages were preliminarily assessed in terms of personal damage,emergency handling,investigation & assessment and pollution remediation.