This paper discusses how to make effective supervision on food safety under internet environment from several aspects such as the great difficulty of online ordering supervision, the absence of review by third party platform, the lack of the relevant laws and regulations and the great difficulty to protect consumer rights. Some suggestions are put forward such as establishing and improving the access permission mechanism of online ordering operators, the introduction of “unknown buyers”, the system of “network and transparent kitchen”, the system of credit evaluation, and the system of tort compensation.