Joryeong Fortress was repaired in 1708. Jeolmok (regulations, the operating rules of the fortress) of the Joryeong Fortress had been drafted in 1749, completed a reviewal of the draft occurred in December 1751, and confirmed by reporting to the king, and operated by jeolmok regulations since 1752 to 1894 AD.
The fact that it was a stone wall which blocked big traffic route directly was the characteristics of Joryeong Fortress distinguished from the other fortresses. Therefore, it was constructed for blocking the route leading up to the mountainous pass through the first gateway located on the entrance of valley, the second gateway located on the narrow valley developed into gorge, and the third gateway also located on the high position of this route. All these terrain features formed a solid double layered fortress like with inner and outer curtain walled fortress having advantageous geographical conditions for entering the fortress while the defence actions were carrying out.
Due to that the tribute of the villages near the Nakdonggang River in northern part of Gyeongsang province was transported through this mountain pass to the north and stored in the Chungju city on the Han River basin for the transport to the capital, Joryeong Fortress was the key place for protecting the tribute transporting traffic route.
Despite of the functional duality of Joryeong Fortress, the governor of Mungyeong-hyeon county was a lower rank official outside the fortress. it made the military officer byeoljang manage the fortress usually. According to the Jeolmok (regulation), these two government officials had to control the officers, military forces, and the civilians as a Suseongjang(general of defence forces) and a Suseongjunggun(military officer) at the training and actual defence situations.
According to the Jeolmok regulation's bring up the clause on defensive forces of Joryeong Fortress, 'SanseongJakdaegun' (fortress guardian shoulder group) was made up based on the Sogogun composed of regional army. The basic tactical unit named 'Cho (哨)' was consisted of 115 men.
Besides, militia was organised with about 300 households civilians living in the fortress and 'Seung-gun' unit was organised with about 50 monks living at two temples in the fortress. In the Jeolmok regulation, the clause of gunnery exercises of each unit and joint forces exercise in the spring and autumn season was added.
'Sucheopgunguan' (based on the social class system reflected on social actualities at that time, people who substitute their duty of military service into economic burden) were extended from 300 to 550 people. According to the clause, they had to learn the shooting skills and join the joint forces exercise perfunctorily(out of formality).
In the case of repairing fortress walls and battlements, the 'Jojeock' (the interest income of grain storage) of fortress, the linen and cotton as a substitution for military service, and the mobilized Seung-gun had to be used especially when the repairing scale was large. Therefore, in many records, competent organization of Joryeong Fortress's Jojeock was classified by categories, the national government office and the provincial government office and 5 counties belong to the fortress. Depending on the time, Jojeock's quantity was recorded as a traditional unit of volume, such as rice and beans. These records indicated that depending on how much was the original financial resources of the central and local government for building the fortress, the remainder was used as Jojuck to repair the fortress.
For the urgent usage of Joryeong Fortress, the goal that stores more than about 10,000 'seok' (120 kg) of rice rations was set up. The primary method to achieve the goal was accumulating the interest of the saved army rations. For all of these process, 5 counties belong to the fortress made their own storages each and control the financial issues such as Jojeock and Gaesaek (renew the old rations).
The area of Joryeong Fortress was designated as a pine tree preserve area with other regulation. So, the Byeoljang supervised and managed it. This was also very distinguishing character of Joryeong Fortress in the latter period of Joseon Dynasty.
For the tactical demands of defending the Joryeong Fortress, many canons, rifles and ammo were produced. Approximately over 250 large canons and various firearms were manufactured, but in the process of repairing the Bukhansanseong Fortress (located behind the capital of Joseon Dynasty), weapons were relocated to secure the Bukhansanseong Fortress.
Since then, according to the very specific list recorded in 1894, military equipments such as various flags, instruments for the signal, and the equipments for the maintaining communication facility were steadily prepared. It can be seen that Joryeong Fortress had expanded and improved the military strength until the final stage of the traditional military system unlike the other fortresses on account of the recognition of the tactical importance consistently.