Herein, the long-term continuous observation of the vertical structure of tropospheric ozone in Guangzhou is conducted by using differential absorption lidar. The diurnal variation characteristics of ozone vertical structure in Guangzhou are provided. The characteristics of two different ozone pollution modes of local pollution and regional transmission are analyzed, and the determination method of the ozone pollution pattern is proposed. Results show that the daily variation of ozone in Guangzhou is obvious, and that the single peak characteristic is prominent. The seasonal variation law of ozone concentration is the following: ozone concentration is highest in summer and lowest in winter;there is little difference between spring and autumn. Local pollution analysis shows that the ozone with high concentration is mainly concentrated near the ground, and gradually decreases with an increase of the height. The decreasing rate of ozone concentration below 0.7 km increases rapidly with the increasing height, and for 1.5-2 km tends to be evenly distributed. The study provides the characteristic values of ozone transport for the three height intervals. The correlation between the extinction of particles and ozoneconcentration at the same height is analyzed. Combined with the meteorological field, the dominant direction of ozone transportation in each season is analyzed.