Kulonprogo Regency is one of the districts producing red curly chili in the Special Region of Yogyakarta. In 2015 most of the production of red curly chili in the Special Region of Yogyakarta was produced by Kulonprogo Regency, which amounted to 168,280 quintals, equivalent to 71.95% of total production. This study aims to find the development of red curly chili in Kulonprogo Regency, how is the behavior of prices at the producer market level in Kulon Progo Regency and consumers in Pasar Induk Kramat Jati, and how the vertical integration of curly red chili at the producer level in Kulonprogo Regency and consumers in the Pasar Induk Kramat Jati. The method used in this study is descriptive analysis using the Index of Market Connection (IMC). The data used are secondary data in the form of monthly production data and monthly prices in the producer market in Kulonprogo and consumer markets in Kramat Jati Central Market. Retrieval of data from the Agriculture and Food Service of Kulonprogo Regency. The results showed that the production of curly red chili was fluctuated every month. The second result, the behavior of red chili prices in the consumer market and consumer markets shows the same pattern, namely prices in the consumer market rise, so prices in the consumer market also rise. As a result, the IMC value is smaller than one, which is 0.89 and the value of b2 is greater than 0.5, which is equal to 0.795348. These conditions indicate that the consumer market has transmitted strategies and prices more quickly.