The invention discloses an outdoor clothes structure capable of adjusting and distributing under-clothes ventilation airflow and a forming method and belongs to the technical field of costume design. The outdoor clothes structure comprises an outdoor clothes upper coat and a pair of outdoor clothes trousers, wherein the outdoor clothes upper coat comprises a front clothes body, a back clothes body, sleeves and a collar, the pair of outdoor clothes trousers comprises a front trouser piece and a back trouser piece, and 3D mesh fabrics IV are arranged at the shoulder portions of the front clothes body. Each shoulder blade portion of the front clothes body comprises an outer-layer protective fabric II and an inner-layer mesh fabric. A chest opening is formed in the chest of the front clothes body and is provided with a zipper, the lower portion of the chest opening is an outer-layer protective fabric I. A lower hem pull rope is arranged at the lower hem position of the front clothes body. The front trouser piece is provided with front trouser piece inset pockets, the front trouser piece inset pockets are provided with front trouser piece inset pocket openings. Trouser leg upper openings and trouser leg lower openings are formed in the knee positions of the front trouser piece. The outdoor clothes structure overcomes the shortcoming of poor ventilation effect of existing outdoor clothes and achieves the internal overall airflow adjusting and distributing effect of the clothes, the wearing comfort of the clothes is improved, and the adaptability to outdoor sports or operation environment of the outdoor clothes is improved.