The theory analyzes the main related factors affected food consumption through path analysis, which include population and demographic structure, the per capita GDP, per capita food production, eating habits, technological level, food prices and so on. 从影响粮食消费的基本要素,人口与人口结构、人均GDP、人均粮食生产、饮食习惯、科技水平、粮食价格等,通过通径分析研究分析影响粮食消费的主要因素。