Remotely-controllable air duct blasting protection device

The invention discloses a remotely-controllable air duct blasting protection device which comprises a support used for installing and bearing an air duct, a protection frame is arranged on the support in a liftable mode, when the protection frame is lifted, the air duct is located in the protection frame, the protection frame can block flying stones generated by blasting, a driving device is further arranged on the support, and the driving device drives the air duct to rotate. The support is further provided with a remote transmission device and a controller electrically connected to the remote transmission device, and the controller is electrically connected with the driving device. When the tunnel needs to be blasted, a worker can operate external control equipment to transmit an instruction for lifting the protection frame to the remote transmission device, the remote transmission device transmits the instruction to the controller, the controller controls the driving device to drive the protection frame to