Abstract: Cryptosporidium was an important pathogen of animal and human diarrhea and one of main lethal factors in AIDS patient. At present, the research on Cryptosporidiosis had become a focus in the research field of global parasitology. There was no efficient drug till now, which could cure Cryptosporidiosis, so the fast, simple, convenient and accurate discovery of Cryptosporidium was the key for con trolling Cryptosporidiosis. As the molecular biotechnology was applied, the detection technology of Cryptosporidiosis got very great development. Now, the detection technologies of Cryptosporidiosis in recent years were summed up simply.