The tropical cyclone motion is affected by many factors,such as the internal structure,the atmospheric temperature and the land conditions.However,the pressure gradient force of the environmental field and the internal force of the tropical cyclone are most important.The general solution of governing equation of the tropical cyclone motion is derived assuming the variation of these forces is linear with the time.Also the three basic rules of the tropical cyclone motion are derived from the general solution of governing equation.Some achievements in scientific research of tropical cyclones can be verified through the calculation and analysis the general solution.