There are mainly Yamaguchi group, Sumitomo group, Inagawa group, Affinity group and Matsuzaka group:

1, Yamaguchi Formation

Yamaguchi group is the largest designated violent group in Japan and one of the oldest and largest gangster organizations in East Asia and even the world. Founded by Haruki Yamaguchi in Kobe City on 19 15, it is headquartered in Kobe, Japan, mainly active in western and southern Japan, and its power distribution covers four Japanese islands.

According to Japanese police investigation, there are about 4,700 members and 5,600 associate members in the Yamaguchi group. It is estimated that the total number of members in this group is 1300, accounting for 29.9% of all violent members in Japan (by the end of 20 17, 12), and there are hundreds of lower-level groups at all levels. 20 18 10 2 The US Treasury Department said that the United States launched an attack on the Japanese Yamaguchi group and announced sanctions against two black companies.

2. Sumitomo Festival

Sumitomo Club, the second largest designated violent group in Japan. Founded in 1962, its core organization is Sumitomo Family, which was founded in the middle and late 9th century. Its headquarters is in Tokyo, Japan, and its main activities are in eastern and northern Japan. In 20 12 years, there were about 12000 full members and associate members of Sumitomo Club. At present, Yamaguchi and Inagawa are the three major violent groups in Japan.

3. Inagawa Association

Japan's third largest designated violent group. Founded in 1972, its predecessor was Inagawa Formation, which was founded in 1949. Headquartered in Tokyo, Japan, there are about 350 organizations at all levels, mainly distributed in eastern and northern Japan. In 20 12 years, there were about 10000 full members and associate members of Inagawa Association. At present, Yamaguchi and Sumitomo are the three major violent groups in Japan.

4. Affinity and association

The second generation Mu in-laws Association (しんわかぃ) and a violent group designated by Japan are headquartered in Takamatsu City, Kagawa Prefecture. There are about 70 players, and the activity area is in Kagawa Prefecture.

5. Songyehui

Pine Leaf Association (まつばかぃ), a right-wing organization designated by Japan as a violent group, is headquartered in Nikko, Taitung District, Tokyo (Songjiang Bajun Construction Industry Violence Pursuit and Release Countermeasures Meeting). Its sphere of influence is 1, 1 and 8 counties north of Kanto, with about 1300 members (in March 2008) and about 600 associate members. Close relationship with the Japanese political party Liberal Party.