The characteristic of the tent is that there are no columns inside, which can make maximum use of the internal space of the tent. According to different site conditions, it can be fixed by steel brazing or load-bearing parts, and it has good wind resistance. The invention has the advantages of low cost, short construction period, recyclability, repeated disassembly and assembly and light transportation. No matter different construction sites (sand, grassland, cement floor, etc.). ), up to four fixing methods for customers to choose freely to ensure safety and stability.