The invention relates to a magnetic track brake control circuit of a rail transit vehicle, which is suitable for a high-suspension magnetic track brake device. Automatic control can be set through a vehicle speed signal, and manual control can also be achieved by manually pressing a button. Time-sharing control over a magnetic track brake executing device (pneumatic) and an electromagnet is achieved; and the electromagnet is automatically powered off after being excited for 5 minutes, so that the electromagnet is prevented from being damaged by long-time work. The magnetic track brake power supply execution circuit can realize the functions of magnetic track brake execution device action control, electromagnet excitation control and electromagnet coil outage reverse DC800V impulse voltageprotection. The circuit can be popularized to all medium-speed and high-speed urban rail vehicles according to specific scene application requirements, and the magnetic rail braking system can be safely and reliably controlled.