This research was to analyze the inland signal-fire which is the main facility of military protective duty for safety ofland in chosun dynasty.The results ofthis researchweredescribedseparatelyasfollows. 1.Five types of site plan of signal-fire were observed,which is circle,oval, rectangular,indeterminateform.Themajoritieswereovaltype. 2.Plan configuration of brazier which is separated with circle,rectangular type roughly wasconstructed with circle type generally.The heightofbrazierwas about 3～4.5m.The diameter ofbrazier was 1.5～2.5m.Building base thatprotectground moistureandinfilteration ofrainfallwasfoundin 5inlandsingal-fire,theheightofit wasabout0.3m～2.5m. 3.Theheightofprotectivewallremaineduntilpresentwasabout1m,thedepthwas aboutaverage1.2m. 4.Entrance was mainly stairs or open type and average width was 1.0～1.2m. Howeverthe depth was almostobserved as 1m,originally,itwas estimated ithas moredepth. 5.The storage of inland signal-fire has rectangular dimension,severaltypes of 1.8×1.2m～5.7×4.4m,square(間) of 1×1～2×1.The building material was stone and locatedbelow ornearthebrazier