The 10th Asian Conference on Ultrafast Phenomena (ACUP 2018) will be held from January 7 (Sunday) to January 10 (Wednesday) 2018 at the University of Hong Kong in Hong Kong. The main topics of the conference are to include a wide range of topics involving both experimental and theoretical aspects of ultrafast phenomena with time scales of femtoseconds to picoseconds in various areas of physics, chemistry, and biology.We are planning to hold the conference on the University of Hong Kong campus, with a total of about 50 to 70 participants.