This paper is mainly anchored in assemblies and parades handled by police agency¡¨. First of all, assemblies and parades are the basic human rights protected by our constitution. The purpose of the police¡¦s involvement in the handling of those activities is to safeguard citizens¡¦ exercise of their rights. Secondly, from analysis of practical cases and through verification of experimental activities and modification of theories, reasonable and proper principles of handling such activities can be submitted as a reference for policemen¡¦s law enforcement and education and training. Finally, the study discusses the contents and regulations of the Law of Parade and Demonstration. It also provides directions of modification of the law through theories and experiments in order to make the law more perfect, protect human rights granted by the constitution, and further inspire people¡¦s law-abiding spirit. From my practical experiences in handling assemblies and parades over the years in police organizations of basic level and this study, the author found that the cases of assemblies and parades in Kaohsiung City during the period from 2001 to 2005 were different in their types. Case-by-case analysis, examination of evidence and deductive method were adopted to examine if the police adhere to the principles of ¡§protecting lawful assemblies¡¨, ¡§banning unlawful assemblies, and ¡§imposing sanction against violence¡§, and if they take the positions of ¡§To rule by law¡¨, ¡§administrative neutrality¡¨ and ¡§strict enforcement of law¡¨ at the same time. If not, the results will turn out to be different. In recent years, people¡¦s political consciousness has been rising and the assertion of individual rights and interests has aroused more and more attention. Besides, the two-party system has almost taken shape in Taiwan. Consequently, assemblies and parades become normal in today¡¦s plural and diversified society. The police should know how to play the role of law enforcement and protector correctly. To achieve the goal, the policemen should accumulate their practical experiences and carry out case analysis continuously. By combining ¡§theories¡¨ with ¡§practices¡¨ together, this study reflects the advantages and disadvantages of the police in handling assemblies and parades at current stage, and point out the direction of amendment to the present Law of Parade and Demonstration. Finally, this study submits one set of concrete and feasible plan for the police agency to follow, and I hope that the plan will be helpful in handling assemblies and parades in the future.