Abstract: Urban green lands like the woodland, grassland, shrubland in the city ofNeijiang were chosen as our research subjects. Through the study of the indices like the volume weight, the mechanical composition, >0.25mm drying sieve aggregate, the anti-erofibility index, the water stability, the effect of different protective green areas upon the anti-erodibility of city green belt soil is put under examination. The findings show that the three kinds of sampled soils are found to have a rather low anti-erodibility which decreases with time; in terms of the mechanical composition, sand grains are predominant, the sand content in soil is rather high; as for the drying sieve aggregate, the particle size range chiefly in diameter from 2mm to 5mm, and from 1mm to 2mm, no significant difference is found in sand particle sizes of 5-7mm, 1-2mm, 0.5-1mm, 0.25-0.5mm; there exists significant difference between the woodland, the grassland and the shrubland in terms of the sand sizes ranging 1-2mm and >0.25mm; as for the water stability of the three sampled land soils, it goes consistent with its anti-erodibility, the higher the water stability is, the higher an erodibility will be found; the topsoil anti-erodibility of the three sampled lands is: shrubland>woodland>grassland; while in terms of the anti-erodibility of the subsurface soil, the order of the three sampled soils is: shrubland>grassland>woodland.