The invention discloses a vertical weaving cloth unwinding mechanism. The vertical weaving cloth unwinding mechanism comprises a square base; a small-top and large-bottom prism-shaped support base is arranged at the middle part of the base; a circular groove is downwards formed in the top of the support base; a fixed column is vertically arranged in the groove; a connecting piece is arranged at the top of the fixed column, and includes a connecting ring and a connecting disc; the connecting ring is annular, and is connected to the top of the fixed column; the connecting disc is arranged at the top of the connecting ring, and is provided with a through hole; a first bearing is arranged in the through hole, and is vertically connected with a rotating roller; an annular groove is formed in the lower part of the rotating roller; a fixed ring is connected into the annular groove; multiple fixed plates are horizontally arranged on the fixed ring in a fan form; the fixed plates are arranged at equal intervals; through grooves are respectively formed in the front sides of all the fixed plates; second bearings are arranged in the through grooves; and the upper parts of all the second bearings are vertically connected with roller shafts for accommodating weaving cloth coils. The vertical weaving cloth unwinding mechanism has such advantages as simple structure, high use efficiency and low cost.