The utility model discloses a snow fence based on I-shaped vertical columns and reinforced concrete ventilation plates. The snow fence comprises the I-shaped vertical columns and the reinforced concrete ventilation plates, wherein a plurality of I-shaped grooves which are vertical to the axial direction are formed in sequence along the axial directions of the I-shaped vertical columns; the I-shaped vertical columns are I-shaped reinforced concrete vertical columns; the integrally-molded reinforced concrete ventilation plates are positioned between the two I-shaped vertical columns; a plurality of I-shaped groove blocks which can be tightly accommodated in the I-shaped grooves formed in the I-shaped vertical columns are formed along a direction vertical to the axial direction; the I-shaped groove blocks are embedded into corresponding I-shaped grooves and fixed to connect the reinforced concrete ventilation plates with the two I-shaped vertical columns; through grooves for preventing and controlling the snowdrift disaster are formed in the reinforced concrete ventilations plates. By adopting the snow fence, the prevention and control costs of the snowdrift disaster can be lowered.