本文探討南宋紹興32 年和嘉定16 年兩個時期的南宋各路人口密度，劃出人口密集的已開發地區和人口稀疏的開發中地區的界線，並論及成因以及對區域開發的影響。在此基礎上，探討適度的人口密度對發展區域經濟文化的推動關係。

The paper studies the population density in each “路”in years 1162 and 1223. The boundaries between well-developed and densely populated regions and under-developed and scarcely populated regions are recognized. The cause of spatial difference of population density and its effect on regional development are discussed. In particular, the focus is how optimal population density promoted economic and cultural progress within region.