Abstract:This paper thinks smut diseases of Phialea temulenta is infected by fungus pathogen of Usetilago sp., Sphacelotheca sp. respectively; finds occurrence period of the diseases in Wuhan region at the end of April and developed till middle of May through observation. The control test in fields shows outside: 25% Triadimefon wetabble powder or 1% polyoxin aqueous solution has better effect in control to the diseases.