Skull fixing head frame capable of monitoring three-dimensional angle in real time

The invention provides a skull fixing head frame capable of monitoring a three-dimensional angle in real time, a rotating coarse adjustment structure comprises a first bevel gear arranged at one end of a fixing rod, a second bevel gear arranged at one end of a rotating rod, a third bevel gear engaged with the first bevel gear and the second bevel gear, a dial plate arranged above the fixing rod, and a second bevel gear arranged at one end of the rotating rod. The locking assembly locks the first bevel gear, the second bevel gear and the third bevel gear. According to the rotary fine adjustment structure, an external thread connecting rod extends into an internal thread groove, a threaded sleeve is arranged at the joint of a rotating rod and a three-nail fixing head in a sleeving mode, and an angle sensor is arranged at the joint of the rotating rod and the tail of the three-nail fixing head. The rotation angle of the rotation coarse adjustment structure is read through the dial plate, and the rotation angle o