In 2007, Chinese Journal of Digestion organized some experts from gastroenterology, surgery, radiology and nuclear medicine departments in China to formulate the "Recommended Procedure for Diagnosis and Treatment of obscure gastrointestinal bleeding (OGIB)" at the Nanjing Conference[1], promoted the study of OGIB and improved the diagnostic level. After five years, the diagnosis and treatment technology of OGIB has been progressing continuously, so it is necessary to supplement and update the recommendation process formulated in 2007 to make it keep up with the times.