The KAGRA collaboration is a scientific organization for the gravitational-wave (GW) detections and GW astrophysics. It consists of more than 360 members from 14 different countries as of June 2019. Regardless the host institutions are the university of Tokyo, National Astronomical Observatory of Japan and KEK which are all in Japan, and regardless the experimental site is in Japan, there are many international members. However, in the collaboration, women and non-Japanese collaborators are still minorities. To accelerate the scientific efficiency, making a comfortable work environment for any members is a key. As a first step, we conducted an online demographic survey. In this article, the result of the survey and our efforts to make better collaboration will be shown.