Online dating is more economical, safe and healthy than other ways of making friends. Now the internet access conditions are very convenient, and the internet access fee is extremely low. There is no need to spend a lot of money to invite friends to eat, drink and be merry to increase feelings, friendship and romance. Online dating can be used for text, audio and video chat in different places, without face to face, which reduces the probability of some people committing crimes. Online dating is a healthy way to make friends, because all its activities are carried out through the network, which greatly reduces the cost of making friends outside the network, thus reducing the pollution and waste on the earth.