"Jiamusi Happy Dancing Aerobics" is a sports event that combines sports, dance, aerobics and other sports forms, and modern fashion elements such as pop songs to pursue human health and beauty. It is a set of fitness gymnastics inherited and invented by retired cadres in Jiamusi City, Heilongjiang Province. It is an aerobic exercise during walking, especially suitable for middle-aged and elderly people. As soon as it was launched in 2008, it was deeply loved by the masses and was very popular. It is a kind of unarmed gymnastics, which can be performed in a limited space without equipment. People achieve the purpose of strengthening physique, preventing diseases, improving health, shaping body shape and controlling weight through exercise, and at the same time receive the effect of pleasing spirit and cultivating sentiment. 20 12 The core part of the popular fourth set of happy dance aerobics consists of 7 sections and 49 movements, 7 tracks, and the music duration is 50 minutes. The arrangement of the whole set of movements is more novel and reasonable, and the fitness effect is more scientific and effective. By the end of 20 12 and 10, many fitness teams and training teams had adapted Happy Dancing Exercises and produced many new sets. However, most of them are based on the original seven paragraphs, plus some self-created actions. Some are composed of eight segments for 60 minutes (7+ 1 mode) and some are composed of 1 1 segment for 80 minutes (7+4 mode). In view of the fact that most of the participants are middle-aged and elderly people, seven 50-minute "happy dance aerobics" are more reasonable and scientific. In this way, "Jiamusi Happy Dance Step" was adopted in the first seven paragraphs of aerobics in various places, and the movements in the last few paragraphs were selected by the teachers from the original "Aerobics March" and created by the group, so the music and movements of many fitness teams were different from the eighth paragraph, and even incorporated yangko or hip-hop elements.