A method for cleaning the filtering tube of a hydrofluorination fluidized bed in uranium conversion comprises the following steps: (1) removal of surface dirt; (2) removal of internal dirt; and (3) passivation and drying. A chemical medicament is prepared for cleaning of the blocked filtering tube of the hydrofluorination fluidized bed. the dirt inside the filtering tube can be effectively removed. The dirt in the filtering tube is further removed through chemical medicament immersion, bubbling and other processes after the dirt on the surface of the filtering tube is washed out. The passivating and drying process is used after the removal of the dirt in the filtering tube in order to ensure the anticorrosion performance of the filtering tube. The filtering tube cleaned with the cleaning method can meet the process requirements of the hydrofluorination fluidized bed to achieve the purpose of repeated use, has certain economic benefits, and reduces the production cost.