The invention discloses a public transit system capable of achieving dynamic and synchronous get-on. The system comprises a plurality of platforms, a vehicle track, a get-on track and a passenger carrying vehicle; the get-on travelling track and the vehicle track are arranged in parallel at an equal interval, and the platforms are arranged along the get-on track; the passenger carrying vehicle comprises a motor vehicle head, a fixed compartment and a switching compartment; the fixed compartment for carrying passengers is fixedly connected to the motor vehicle head, and the switching compartment can be connected with the fixed compartment or disconnected from the fixed compartment through a connecting mechanism; the switching compartment comprises a transfer compartment and a get-on compartment, the transfer compartment is detachably connected with the passenger carrying vehicle and synchronously operated with the passenger carrying vehicle, and the get-on compartment is stopped insidethe platforms; by adopting the dynamic structure design, the platforms can drive passengers and the vehicle to be operated synchronously when the passenger carrying vehicle pulls in, so that passengers can get on the vehicle without stopping and starting of the vehicle, the passenger carrying vehicle can run all the time, the time is greatly shortened, and the running efficiency of the passenger carrying vehicle is improved.