The 13th International Conference on Mid-Infrared Optoelectronics: Materials and Devices (MIOMD-XIII) had been successfully held in Beijing, China, Sept. 18-22, 2016. The conference is completed perfectly. It is a successful conference! MIOMD-XIII had 125 participants from 15 countries,and received a total of 92 abstracts from 15 countries, including 5 plenary talks, 15 invited talks, 30 contributed oral papers and 41 posters. It provides an opportunity for researches to share their lasts achievements, exchange ideas, foster collaborative relationship and explore future directions.