A cloud model with gases transmission process is used to investigate the vertical transport and redistribution of tracer gases at different altitudes in a deep convective system, which occurred on 30 July 2014 over Chuzhou, Anhui Province. The tracers were efficiently transported upward by large vertical velocity from their initial layer at the cumulus stage. The substantial entrainment and horizontal inflow in the mid-troposphere brought the tracers outside the cloud into the convective core region, and the distribution of tracers was further affected by the convective cloud. The tracers in each level could be transported upward to the upper troposphere, and the contribution of mid-tropospheric tracers (2.1-4.5 km, 4.5-7.5 km, 7.5-10.8 km) was comparable to that of boundary layer tracers. For instance, for the tracers that were transported to the altitude of 11-13 km, 4.9% and 6.3% of them were originated from the boundary layer and the mid-troposphere (2.1-7.5 km), respectively. Furthermore, the tracers at 0-2.1 km could be transported to the side of the cloud, bringing local pollutants to the surrounding areas outside the cloud. The tracers between 2.1 km and 4.5 km altitudes could be transported downward to the boundary layer, generating new local pollution. The downward transport of tracers became weak as the altitude of tracers increased, and the upper troposphere tracers (10.8-15 km) could hardly be transported down to 6 km altitude.