Jiu Jitsu and Judo are two concepts when they need to be distinguished. Jiu Jitsu, a fighting skill with a long history, basically originated in Japan. Its basic idea is to combine rigidity with softness, and to be small and broad. Different from other fighting skills, the main features are throwing skills and fixing skills, that is, knocking down opponents and restricting their movements. Stylistically speaking, Japanese jujitsu emphasizes throwing more, and only when both sides fall to the ground can they use ground fixation. Brazilian Jiu Jitsu emphasizes tight-fitting and twisting, so it has even developed its own unique skills of twisting and wrestling opponents with its legs. The difference between jujitsu and judo is that the former is a kind of fighting skill, while the latter is more inclined to sports, which was developed on the basis of jujitsu in Meiji era of Japan.