The invention relates to Cryptocaryon irritans standardization passage fertilizing method and its special collector which belongs to aquatic animal field. The method includes the following steps: using Trachinotus ovatus as host; infecting as dosage for 8000-15000 larva per fish at 27+/-0.5 degree centigrade water temperature 29-32 per mill salinity between 22:00-24:00 for 3h in dark; appearing trophont after 60h which drops to form cyst prosoma in 24h; collecting and culturing for 60h; hatching larva reaches climax after 24h; collecting the larva. And it has the advantages of high overall yield for parasite, little used times, and simple collecting method. |