Axially-symmetrically concurrent combination He-Ne laser

The invention relates to the field of optics, optical engineering and laser medical treatment and discloses a method and device for high-power He-Ne laser output in the field of laser medicine by sharing one output mirror by a plurality of circular quartz or glass discharge tubes and a plurality of resonant cavities. The method is characterized in that: a plurality of discharge tubes are arranged in an axially-symmetrical manner; tube core lines of the discharge tubes are intersected on the curvature center of the inner surface of the shared output mirror and positioned on a conical surface with the curvature center of the inner surface as a vertex and the axis of the output mirror as a shaft; one end of each discharge tube, which is farther away from the shared output mirror, is sealed by a totally reflecting mirror to form a stable and precision-adjustable plane-concave mirror respectively with the locally partial reflection surface of the inner surface of the output mirror; axes of the resonant cavities an