Arrest in China is a kind of preliminary custody system and effectively ensures the process of penal proceedings, however, if arrest measures are abused, the human rights of criminal suspects will be seriously violated, therefore, China Penal Proceedings Law introduces necessary conditions for arrest. There are many problems in judicial practice of the application of arrest necessity which lead to uncertainty and imbalance of the human rights protection effect for criminal suspects. Thus, we are necessary to set up perfected examination system for arrest necessity and to normalize arrest necessity conditions from the perspective of verif〖JP2〗ication, examination, assessment and so on so as to better embody the value of arrest necessity on human rights protection.