A plastic curtain (1) for processing laver is composed of plastic strips weaved by weaving threads. Plastic strips (2) with anti-slipping posts (3) are spacedly arranged in the curtain (1), the diameter of the anti-slipping posts (3) is less than 4mm, the height of the anti-slipping posts (3) is less than 20mm, the shape of the plastic strips (2) with anti-slipping posts (3) is flat, circular or elliptic. The curtain (1) has a rational structure and good working effect.