The invention provides a passenger-head protecting structure of an automobile, and belongs to the technical field of machinery. The passenger-head protecting structure solves the problems that a conventional protecting structure is not liable to replace, poor in protection effect, and the like. The automobile comprises a top cover and a ceiling, wherein a mounting cavity is formed between the top cover and the ceiling; mounting holes are formed in the ceiling; the passenger-head protecting structure is mounted and arranged in the mounting cavity through the mounting holes. The passenger-head protecting structure comprises a protective fabric layer and a fixed frame which is arranged on the protective fabric layer and elastic, wherein a buffer layer stuffed with soft foaming materials is arranged between the protective fabric layer and the fixed frame; the protective fabric layer is connected with the ceiling, the surface of the protective fabric layer is flush with the surface of the ceiling, and the protective fabric layer can cover the mounting holes. When the automobile is jolted, or a passenger arises and the head of the passenger hits against the roof of the automobile, the buffer layer in the protecting structure is deformed and bent under pressure so as to decrease impact force, so that the head of the passenger is prevented from being hurt. The protecting structure is easy to demount and replace, and the replacement of the whole ceiling is not needed, so that the cost is reduced, and the working efficiency is improved; the protecting structure is good in protecting effect.