The actual condition of Korean use and the improvement plan of the public institution homepage in Jeonbuk. This paper has a purpose to grasp the actual condition of Korean use in the public institution homepage in Jeonbuk and seek for the improvement plan. Presently the actual condition of Korean used in the wrong way is serious in homepage of the public institution. It is likely to cause a problem of dropping down the reliability of the public institution. Accessability of people to the public institution homepage has been expanded by the proliferation of the population using the internet recently and SNS(Social Network Service). Like this, as the public language embodied by the web service has the publicity, the continued administration and inspection on the actual condition of Korean use are needed. This paper examined the actual condition of Korean use through data such as vocabulary and sentences posted on the homepage in 17 homepages of city, county, and city hall in Jeonbuk. Consequently, 2319 cases used in the wrong way were extracted in the homepage of each self-governing body. The spacing word error occupied for the most part about 71%, followed by the punctuation marks about 8.3% as the second. Homepage has the role as the window to communicate interactively with citizens and means to deliver the policy of the public institution to the outside. All sorts of speech acts made in homepage represent the reliability of the public institution and have the representative of it. Therefore, the public institution including a self-governing body needs to pay attention to the maintenance and the management of homepage. Furthermore, Homepage must be used smoothly through monitoring and complementary measures about the public institution homepage by the outside group including the monitoring personnel.