The existence of billboards as a medium of communication and promotion in various businesses has become an inseparable part of people's lives. Billboards that are often found on corners or roads, of course, have benefits and become the main attraction for the community, students are no exception. If used properly, billboards can be used as media or innovative teaching materials that can increase students' knowledge regarding language functions. On this basis, with this study the researcher hopes that readers can find out the effect of affixation on the meaning of a word, as well as its benefits in the development of Indonesian language teaching materials. The subject of this research is billboards that are scattered in corners or roads in Surakarta City and its surroundings. The results of the study show that the meaning of the words contained in billboards can be influenced by the type and function of the attached affixes. The order of affixes starts from those that are most often found in data analysis, namely affix combinations (confixes), then suffixes and prefixes. The affixes that were not found in the data analysis are infixes. While the benefits of implementing advertising media are: 1) Improving reading and writing skills; 2) Improving the reading skills of deaf children; 3) Flexible; 4) Interesting and interactive; 5) Facilitate the delivery of affixation material; 6) Can be collaborated with P5 co-curricular subjects.