Please find attached my review comments.

This paper presents the results of impact of aerosol optics on vertical distribution of ozone. The authors reveal the characteristic of aerosol-BL and aerosol-photolysis interactions in different aerosol mixing states and their impacts on ozone variation. The general conclusion was that aerosols lead to turbulent suppression, precursor accumulation, lower-level photolysis reduction and upper-level photolysis enhancement. Additional simulations supported that aerosol effect on precursor, photolysis and ozone is consistent under different underlying surface and pollution conditions. The research topic fits into the ACP scope, and the paper was concisely written, I suggest this article be published with a minor revision.

General comments:

More discussions are needed to clarify the meaning and limitations of this research. This is important for other researchers to consider the applicability of this study. Observations from the field campaign can be included to support the results concluded from model simulations. In addition, I suggest modifying the titles of section 3.2, 3.3 and 3.4 to convey the main topic of each section more clearly.

On top of the above comments, the authors are also expected to address the following specific points:

Line 76-78: “We mainly use the data from 2 to 5 November to study the effect of aerosols on ozone, and detailly investigate the physical and chemical mechanisms in the pollution stage on 2 November”. I can not find related results in the manuscript.

Line 88: Which year’s emission inventory was used in this study?

Section 3.2: I’m confused about the content in this section. Why did you just describe the changes of NOx affected by aerosol-BL interactions instead of Ozone and PM2.5.

Line 161-162: Does ozone here mean that in BL?

Line 163: Should be “a strong positive gradient”.

Section 3.4: Discussions about the differences between three aerosol mixing states in process analysis are rare, I suggest adding some content to explain the differences described in the first paragraph.