Whangchangkumpyo(黃腸禁標 : forbidden mark of whangchangmok pine tree cutting) is not only a historical forestry material but also a valuable physical proof supporting historical facts recorded in written documents. This study, using 6 whangchangkumpyo`s which have been discovered so far, has investigated a comprehensive value of kumpyo(禁標). For this investigation, the location, sine, inscription, discovery of them and how they were reported have been compared with what is recorded in written documents. A comparative analysis of whangchangkumpyo and its investigation have enabled the author to identify the distribution of high quality pine trees, the political and economic significance of kumsan(禁山) and bongsan(封山) at the time, changes in geographical names over time, bits of tracks from old road network. Finally, it is suggested in this study that the recognition of the value of whangchangkumpyo should be more encouraged and the protection of it should be necessary.