The purpose of this paper is to make clear the causes that lead to the tort in land expropriation and to explore countermeasures. Methods of comparative analysis and investigation were applied. The results indicate that: (1) the four types of tort in land expropriation include the tort generated by surpassing "public interest" in practice, not complying with legal procedure, not giving just compensation, and the combined action of the former three ones; (2) the main reasons that lead to the tort in land expropriation are the imperfection...