The invention relates to a preparation method of latticed linen, in particular to the preparation method of latticed hessian, which belongs to the field of spinning. The preparation method of the latticed hessian sequentially comprises the following steps of softening, spinning, spooling, warping, drawing-in and weaving, wherein the drawing-in step is characterized by drawing a crossing thread in a back heddle of a weaving machine firstly and then drawing the crossing thread in a doup, drawing a ground warp in a ground heddle and then drawing the crossing thread and the ground warp between two basic heddles of the same crossing set; and during the weaving step, a double warp beam is adopted, the opening time is in 110-120 degrees, the height of a rear beam is 85-90 cm, the height of a crossing thread beam is 120-130 cm, the distance between the upper part of a leno heald and an upper beam is 20-30 cm, the rate of the weaving machine is 90-120 r/min, the beating-up speed is 1-1.5 m/s, and the weft yarns are parallelly arranged and the crossing thread and the ground warp are mutually twisted when in manufacturing. According to the preparation method disclosed by the invention, the latticed hessian with large holes and stable latticed structure can be prepared.