The invention relates to an
ozone generating tube which comprises an inner layer spacer sleeve and an inner liner tube which are sleeved coaxially, wherein the inner liner tube is arranged in the hollow inner layer spacer sleeve, an air gap for forming
corona is formed between the inner layer spacer sleeve and the inner liner tube, a
dielectric insulating layer is attached on the outer surface of the inner liner tube, a
front cover combining piece and a rear cover combining piece are arranged at two ends of the inner layer spacer sleeve, a cooling water inlet and a cooling water outlet are respectively arranged at two ends of the outer wall of the inner layer spacer sleeve, an air inlet and an air outlet are respectively arranged on the
front cover combining piece and the rear cover combining piece and both communicated with the air gap, the rear cover combining piece is connected with a grounding end, and the
front cover combining piece is connected with a high-
voltage input end; an inner
electrode of the high-
voltage input end is connected with the inner liner tube, an outer
electrode of the high-
voltage input end is connected with the inner layer spacer sleeve, a front
airflow distribution piece and a rear
airflow distribution piece are respectively arranged on gas paths at two ends of the inner liner tube and respectively comprise a core part and a working part for enabling
airflow to enter the air gap, wherein the core part is connected with the inner liner tube, and the working part is provided with convex teeth which are evenly and circumferentially distributed and circumferentially and equally divide the air gap.