This document outlines the structural theory of inflation in less developed countries. It discusses how structural defects and bottlenecks exist in these economies that cause inflation, making the traditional quantity theory of money not applicable. Three main types of bottlenecks are described: agricultural bottlenecks due to issues like land ownership that limit food production growth; government resource constraints that force them to print money to fund infrastructure projects leading to inflation; and foreign exchange bottlenecks from low exports and high import payments causing currency devaluations and price increases. The structural theory argues these bottlenecks must be addressed through balanced investment instead of just monetary or demand-side policies to effectively reduce inflation in less developed economies.