Abstract: To protect consumer health, improve the quality of cold drinks, and provide effective and reliable basis for supervision, microorganism pollution of drinks which were produced in small homemade drink stores in Haikou City was inspected. 43 bottles of three kinds of drinks including fruit juice, milk tea and black tea and drinking water were randomly purchased from drink stores in urban area of Haikou in July 2015. The total bacteria count and Gram staining test were carried out according to Microbiological Examination of Food Hygiene: Examination of Frozen Drinks and Cold Drinks which was published by the Ministry of Health in China. 25 of the 43 samples were judged as qualified, and the pass rate was 58.14%. Black tea had the highest bacteria count, which was 1.97×104 CFU/mL, while milk tea had the lowest bacteria count. The production process and the storage of drinks were the main sources of bacteria pollution. The supervision agency should enforce the supervision for improving the quality of the drink and protecting consumer health.