“太阳帆”利用太阳发出的光子碰撞太阳帆推动航天器飞行 ,本文对太阳帆的由来、原理、所用材料与构造及存在问题作一简单的介绍 .1　问题的由来40 0年前著名天文学家开普勒曾设想不要携带任何能源 ,仅仅依靠太阳光能就可使宇宙帆船驰骋太空 ,初步提出了“太阳帆”的设想 .随着 “Solar sails” make use of the photons emitted by the sun to collide with the solar sail to propel the spacecraft into space. In this paper, we briefly introduce the origin, principles, material and structure of solar sails and their existing problems.1 The origin of the problem 40 years ago, famous astronomers Kepler had envisaged not to carry any energy, just relying on solar energy can make the universe sailing into space, tentatively put forward the idea of ​​“solar sail.” With the