A war leads to much of the loss of lives and materials, at the same time causes a social unrest as a materially large scale collision between nations. And then a ruler put all of national power into postwar reconstruction to minimize the aftermath of war. If so, the public peace and order, before anything, should be stabilized for the purpose of the reconstructive performance without a hitch. That is to say, The success or failure to the reconstruction of a country depends on the reestablishment of public peace and order. Japanese Invasion of Chosun in 1592(壬辰倭亂) gave such a great shock and influences to the Chosun Dynasty that it distinguished either the former era or the latter era from the period of Chosun Dynasty. With Chinese reinforcement of the Ming Dynasty, a loyal troops(義兵)' s resistance in all parts of the country, and admiral Yi Sun-shin(李舜臣)' s victory in naval battle against the Japanese aggression, The Chosun Dynasty overcame Japanese Invasion. In the middle war time, the king Seonjo(宣祖 ; 1567-1608) fled from the Japanese enemy and returned a palace in a capital city. To exercise sovereign power, it was necessary for both the king Seonjo and the royal court to stabilize for the public peace and order in the neighborhood of a capital city. Therefore this war time was meant to a remarkable time of the Po-Do-Chung(浦盜聽)s activities. the Po?Do'-Ch' ung was the police bureau and a special of organization of police in the Chosun dynasty period. It taken the primary responsibility for the maintenance of the public peace and order. Firstly, This study looks into both downfall and rehabilitation course of the public peace and order within a capital city in the war time, especially when the king Seonjo evacuated the capital and returned to the capital. Subsequently this article concentrates the Po-Do-Chung's activities into a focus and examines closely to the maintenance of the public peace and order within a capital city in the postwar period of reconstruction. Expressly the main subjects of this article deal with the Po-Do-Chung's activities; extirpation of evil practices in wartime, a clean liquidation of Japanese invader's vestiges, and overseeing to reinforcement's crime of the Ming Dynasty.