The invention relates to the field of preparation and application of man-made micro motors and provides a high-ratio surface hollow tubular micron motor, a preparation method and application. The micron motor is a chemically driven tubular micron motor and aims to solve the problems that most existing tubular motors adopt metal Pt as a catalytic medium, cost is high, the specific surface area is small, and surface structure control is difficult. According to the preparation method, cheap MnO<2> is used as the catalytic medium, convenient electrochemical deposition by a template method is adopted as a preparation means, a PEDOT micron tube is synthesized first, then a Fe layer is electrically deposited on the inner surface of the PEDOT micron tube, an MnO<2> inner layer is prepared throughanodic deposition on the basis of a Fe intermediate layer obtained through cathodic deposition, therefore, the high-ratio surface hollow tubular MnO<2> micron motor with the inner surface of a nanometer scale intercalation structure is prepared, and effective degradation of organic dyestuff, namely methylene blue in an aqueous solution is realized.