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华支睾吸虫卵黄腺为分散型，由许多卵黄小叶组成，每个小叶由不同发育期的卵黄细胞组成，小叶的外周有间质层包绕。营养细胞多分布于小叶外周，此种细胞具较多突起，形成网状，卵黄细胞则分布在网状结构之间。卵黄细胞又分为连续的３个发育阶段。一期（Ｓ１）为未分化的卵细胞，体积小，胞质内细胞器甚少。二期（Ｓ２）卵黄细胞系卵黄物质合成的活跃时期，细胞体积增大，胞质中有高尔基体，内质网。卵黄颗粒形成逐渐增多，聚集成团称卵黄球。三期（Ｓ３）为成熟的卵黄细胞，体积显著增大，胞质中细胞器减少或消失，但有大量糖原颗粒。据此认为卵黄细胞有双重功能，早期作为分泌细胞，成熟后具有营养细胞功能。
Clonorchis sinensis egg yolk glands for the dispersed, composed by many yolk leaflets, each leaflet by the different stages of the development of yolk cells, the outer layer of the leaflets surrounding the stroma. The distribution of vegetative cells in the periphery of the leaflets, such cells with more protrusions, the formation of reticular, yolk cells are distributed between the network structure. Yolk cells are divided into three consecutive developmental stages. A (S1) for the undifferentiated egg cells, small, small organelles within the cytoplasm. Phase (S2) yolk cell line during the active synthesis of yolk material, cell volume increases, the cytoplasm of the Golgi apparatus, the endoplasmic reticulum. The formation of yolk granules gradually increased, gathered into a group said yolk ball. Phase III (S3) is a mature yolk cell, the volume was significantly increased, organelles in the cytoplasm reduced or disappeared, but a large number of glycogen particles. According to this, yolk cells have dual functions, as early as secretory cells, mature cells with vegetative function.