本文报导了浙南岛屿岩相潮间带贻贝类软体动物的种类及数量组成与分布规律。研究表明，种类和数量的水平分布和垂直分布与盐度、海岸开敞性、浪击度、耐干力、空间异质性有关，数量的季节变化与繁殖、干扰有关。 This paper reports the species, quantity, composition and distribution of mussels in the intertidal intertidal zone of southern Zhejiang Island. The research shows that the horizontal distribution and vertical distribution of species and quantity are related to the salinity, open sea level, the degree of waterlogging, the resistance to dryness and the spatial heterogeneity. The seasonal variation of the quantity is related to the reproduction and disturbance.