The invention provides a turnover mechanism and a carrying device. The turnover mechanism comprises a turnover platform, a driving assembly, a supporting assembly and a brake assembly, wherein the turnover platform is used for bearing cargos; the driving assembly is connected to one end of the turnover platform and used for driving the turnover platform to overturn facing at least one side; the supporting assembly and the driving assembly are relatively connected to the other end of the turnover platform, and the supporting assembly is used for supporting turnover of the turnover platform; andthe brake assembly is connected with the end, close to the supporting assembly, of the turnover platform, and is used for locking a turnover angle of the turnover platform. According to the turnovermechanism, the brake assembly is arranged at the other end of the turnover platform opposite to the driving assembly, through the cooperation of the brake assembly and the driving assembly, the turnover platform is locked at a preset turnover angle, during braking, two ends of the turnover platform are simultaneously contained, so that braking force of the turnover platform and holding power of the turnover angle are improved, and the turnover requirement of current larger cargos are met.