目的研究海盘车属的棘的形态学差别。方法借助显微照相和扫描电镜等新的方法,对中国海域海盘车属4种海盘车的棘进行研究。结果记录4种海盘车棘的数量排列和形态,同时对不同部位棘进行拍照记录,归纳出基于棘显微结构的检索表。结论 4种海盘车的棘在不同部位排列数量和形态上存在比较明显的差异,可以作为鉴别标准。 Objective To study the morphological difference of spines belonging to sea-buckets. Methods With the help of new methods such as micrographs and scanning electron microscopy, the spines of four sea-buckets of Chinese sea-buckets were studied. Results The number and shape of spines of four kinds of sea-buckets were recorded. At the same time, the photos of spines of different parts were recorded, and the retrieval table based on spine microstructure was summarized. Conclusion There are obvious differences in the arrangement and morphology of the spines of four kinds of sea-buckets in different parts, which can be used as the standard of identification.