A study on Bang-Yak-Hap-Py$reve{u}$n, one of the most widely-known Korean medicine books, has been conducted and the findings are as follows:the political and social background at the end of Yi-dynasty amidst the inflow of western civilization and the aggression of foreign forces can be seen as a historical period of trial, when civilization and independence had to be preserved at the same time, during the period, the social trend was to pursue a rapid practical solution rather than a profound theory. Responding to this trend, simple and easy medical science became to prevailand the representative medicine book of this kind was Bang-Yak-Hap-Py$reve{u}$n. 1. Bang-Yak-Hap-Py$reve{u}$n was written comprising the characteristics of simple and easy medical science with a view to popularizing-collection of logics, easy readability, medical science in time, etc. 2. Bang Yak-Hap-Py$reve{u}$n, rich and grand in content, came out of Dong-$reve{U}$i-Bo-Gam at the right moment as a pragmatic guide book of Korea medical practice symbolizing Korean spirit. 3. Do-yun Whang whose pen name was Hye-Am was born in Changwon, Kyungnam-do as the 18th descendant of Changwon Whang family. He engaged in medical practice in Seoul and wrote and edited Boo-Bang-Py$reve{u}$n-Ram. $reve{U}$i-Jong-Son-Ik, $reve{U}$i-J$reve{u}$ng-Son-Ik-Bu-Yeo, $reve{U}$i-Bang-Whan-Tu, ect. and made his son, Pil-Su follow him and let him edit Bang-Yak-Hap-Py$reve{u}$n, which put $reve{U}$i-Bang-Whal-Tu and Son-Ik-Bon-Cho together. 4. The construct of Bang-Yak-Hap-Py$reve{u}$n can be subdivied into three parts: herbs of 34 classes and 514 kinds were arranged on the upper part and $reve{U}$i-Bang-Whal-Tu was arranged on the middle end lower part. Such arrangement can be very effective in clinics. 5. Bang-Yak-Hap-Py$reve{u}$n as a curative book of Korean medical science has been a necessary another ego for many Korean medical practioners. It also played a great role of enhancing Korean oriental medical science to be widely used by Koreans. On the other hand, it produced a side effect of emergence of employed medical practioner who lacked in scholastic aptitude. 6. Tens or newly edited Bang-Yak-Hap-Py$reve{u}$n have been issued. Among them, Jung-Jeong, Bang-Yak-Hap-py$reve{u}$n, J$reve{u}$ng-Mak-Bang-Yak-Hap-Py$reve{u}$n. By$reve{u}$n-J$reve{u}$ng-Bang-Yak-Hap-Py$reve{u}$n, and By$reve{u}$n-J$reve{u}$ng-Bang-Yak-Jung-Jeon have been widely known. Lately, Bang-Yak-Hap-Py$reve{u}$n which includes more symptoms and remedies or is translated into Korean came out in several kinds. 7. The number of korea classical medicinal books quoted in Bang-Yak-Hap-Py$reve{u}$n is 68, among which Dong-$reve{U}$i-Bo-Gam Occupies the top in the list enlisting 69 medicinal treatment. This Shows that Dong-$reve{U}$i-Bo-Gam gave birth to Bang-Yak-Hap-Py$reve{u}$n.