Miracidium in the free swimming in the water and onto the initiative of the snails in the water in the body, develop into the mother sporocyst, cloning, have a daughter sporocyst.

• 毛蚴能在水中自由游动，并主动钻入水中的钉螺体内，发育成母胞蚴，进行无性繁殖，产生子胞蚴。