The physical characteristics, chemical components, and neutral aroma components of cigar tobacco leaves were measured under three different cigarette weaving densities (30, 35, and 40 pieces/m) using Cuba No. 7 central leaf as the material. The results showed that with the increase of weaving density, the single leaf mass, leaf thickness, and leaf mass weight of cigar tobacco gradually decreased, while the stem content, tensile force, and equilibrium moisture content gradually increased. When the density of woven tobacco was 35 pieces/m, the protein content was the lowest, while the total sugar and reducing sugar were the highest. The nicotine content increased with the increase of woven tobacco density. When the density of woven tobacco increased from 30 pieces/meter to 35 pieces/m, the content of neophytadiene in tobacco leaves gradually increased. When the density of woven tobacco increased from 35 pieces/m to 40 pieces/m, neophytadiene content decreased by 45.74%, resulting in a decrease in the total amount of neutral aroma compounds in tobacco leaves, and a similar trend in the degradation products of cembranenoid. In summary, when the weaving density is 35 pieces/m, the physical properties of cigar tobacco leaves are better, the chemical components are more coordinated, and the content of neutral aroma substances is higher, which is conducive to the formation of cigar tobacco quality.