Production process and device of ramie/cotton big and small yarn natural box loom fabric

The invention provides a production process and device of a ramie/cotton big and small yarn natural box loom fabric. The production process comprises the following steps: firstly, making a warp preparation; performing primary reeding and secondary reeding; performing weft selection, weaving and mending; lastly, arranging a bracket on main wallboards on both sides of an ordinary GA747 rapier loom, wherein a secondary warp beam configuration mechanism is arranged on the bracket, a warp beam is provided with a let-off device, a warp loosening feature of small yarns is formed through a driving action of a primary warp beam and passive transfer, so that a cloth cover special style is kept. The process adopting the scheme is simple, and is convenient to operate; the equipment cost and other research and development costs of an enterprise are lowered effectively.