The invention discloses a river-crossing method for an automobile. A plurality of ground anchors are respectively arranged on both sides of the river and are fixedly connected through pulling cables which have equal length and are parallel to each other; a driving wheel and a driven wheel of the automobile are respectively in rolling connection with the pulling cable through a wheel connecting device and a suspension rolling device; and the automobile crosses over the river along the pulling cable by the self power of the automobile. The invention has novel design, is convenient to use and easy to operate, ensures that the automobile crosses over the river smoothly without a bridge by the self power, provides a river-crossing method with low cost, short time and high efficiency in case that the automobile can not cross over the river resulting from collapse of bridges during important activities of wars, military exercises or earthquake relief, and the like, brings convenience for self-driving cross-country venture lovers, has very strong practicability and is worthy of promotion and application.