Height and angle adjusting mechanism

The utility model provides a height and angle adjusting mechanism. The height and angle adjusting mechanism comprises a first mounting seat; the height adjusting structure comprises a lead screw nut, a lead screw and a first adjusting hand wheel, the lead screw nut is fixedly arranged on the first installation base, the lead screw and the lead screw nut are connected in a sleeved mode and meshed with each other, and the first adjusting hand wheel is arranged at one end of the lead screw; the angle adjusting structure comprises a second mounting seat, a rotating shaft, a fixing seat and a second adjusting hand wheel, the second mounting seat is arranged at the other end of the lead screw, the rotating shaft is rotationally arranged on the second mounting seat, and at least one end of the rotating shaft extends to the outside of the second mounting seat to form an extending part; the fixed seat is arranged on the rotating shaft and can rotate along with the rotating shaft, and the second adjusting hand wheel is