An automatic arranging machine for membrane fiber which comprises a workbench, and a membrane fiber reel, a membrane fiber guide plate, a first membrane fiber traction apparatus, a membrane fiber cutter, a membrane fiber bracket and a second membrane fiber traction apparatus which are sequentially arranged and mounted on the workbench. The invention provides an automatic arranging machine for membrane fiber and a membrane module production device, which mainly rely on a membrane fiber automatic filling machine to accurately control the membrane fiber, and realize passing the automatic membrane fiber through the membrane fiber bracket into a membrane tube by using the membrane fiber traction apparatus to cooperate with a related mechanical walking structure. The automatic control technology utilized in the whole process is mature, the manual intervention process is less, the consumables are used less, the manufactured components are with high quality, the production efficiency is high, and the produced membrane module has a good performance consistency and can be applied to the manufacturing process of many membrane separation modules.