This investigation conducting a survey of current status at 12 small scale rice mill enterprices at Thoi Lai district, Can tho city. The survey recorded such of rice mill factories used a dielsel engine to run the milling machines that cause of such indoor polluiton. Besides that the results showed the negative affect from these activites onto the local communities such as worse air quality, ect..Based on that fact, there are some suggestions issuing to improve the mention situation