Damping regulating valve regulating mechanism, regulating valve, external air reservoir and shock absorber

The utility model provides a damping regulating valve adjusting mechanism, a regulating valve, an external air reservoir and a shock absorber, and relates to the technical field of shock absorbers, the damping regulating valve adjusting mechanism comprises an adjusting knob, an adjusting shaft, an installation positioning block, an adjusting block and a gear positioning assembly, the adjusting knob is connected with the adjusting shaft, the adjusting block is in threaded connection with the installation positioning block, and the gear positioning assembly is connected with the adjusting shaft. The adjusting shaft is connected with the adjusting block, the adjusting shaft is rotated to enable the adjusting block to rotate so as to enable the adjusting block to generate telescopic motion, the gear positioning assembly comprises gear shifting positioning grooves and positioning pieces, and when the adjusting shaft rotates to different gears, the positioning pieces are clamped into the corresponding gear shifting