The invention discloses an intelligent navigation obstacle avoidance travel auxiliary method and system for a blind person. The method includes the steps of voice acquisition and analysis, path planning design, real-time navigation information determination, real-time navigation broadcasting and the like. The system comprises a storage module, a voice acquisition module, a voice data processing module, a positioning device module, a communication module, a path design determination algorithm module, a real-time navigation information determination module and an information transmission broadcasting module. The method and the system are stable, reliable, good in interference resistance and wide in applicable range, can conveniently and timely guide the blind person to advance in a complicated environment, and have the advantages of high system intelligence, advanced and scientific method, advancing path safety and accuracy and the like. Freedom of action of the blind person is greatly improved, and the method and the system have practicability, implementability, high practical values and wide application prospects.