Abstract: In order to clarify the control effects of five fungicides on the bakanae disease and sheath blight disease of rice at spike period, the comparative tests of field efficacy were carried out in northern Fujian in 2022. The results showed that: Five days before heading, the use of the five nano-formula pesticides (including 9% trifloxystrobin·tebuconazole nano-pesticide 1 500 mL·hm^-2, 30% trifloxystrobin·tebuconazole SC 499.5 mL·hm^-2, 30% difenoconazole-propiconazole EC 375 mL·hm^-2, 45% hymexazol EC 750 mL·hm^-2, and 40% flusilazole EC 120 mL·hm^-2) could better control the bakanae disease and sheath blight disease of rice. The control effects of the five fungicides on the sheath blight disease of rice were ranked as follows: 9% trifloxystrobin·tebuconazole nano-pesticide>30% difenoconazole-propiconazole EC>40% flusilazole EC>30% trifloxystrobin·tebuconazole SC>45% hymexazol EC. The control effects of 9% trifloxystrobin·tebuconazole nano-pesticide on the bakanae disease and sheath blight disease of rice were the best, with the correction controlling results of 99.425% and 95.75%, respectively, which were significantly higher than that of 30% difenoconazole-propiconazole EC 375 mL·hm^-2, extremely significantly higher than that of 30% trifloxystrobin·tebuconazole SC 499.5 mL·hm^-2, 45% hymexazol EC 750 mL·hm^-2 and 40% flusilazole EC 120 mL·hm^-2.