The invention provides a coal mine open blasting shot hole filling and fixing device and relates to a device for blocking a shot hole through stones on the site in the open-cast mining process. The device is characterized in that a pair of arc-shaped plates are symmetrically arranged on the end face of one side of each supporting ring; sliding disks are arranged in the middle portions of the supporting rings; each sliding disk is connected with the corresponding supporting ring through two supporting arms which extend in the tangential direction of the sliding disk and are distributed in a 180-degree mode; elastic steel wire nets are arranged between the sliding disks and the corresponding supporting rings; each elastic steel wire net is formed by weaving springs formed by coiling steel wires; one end of a hollow guide shaft is perpendicularly arranged on the sliding disk of the corresponding supporting ring and located on the other side of the supporting ring; a plane is milled on theouter surface of each hollow guide shaft along the axis; each hollow guide shaft is provided with a thread, and the hollow guide shafts are sleeved three guide sleeves.