A laser diode(LD) dual-end-pumped electro-optic Q-switched NdYVO4 solid-state ultraviolet laser is reported by using a U flat-concave resonator, with type I phase-matched LiB3O5(LBO) as the second harmonic generation crystal and type II phase-matched LBO as the third harmonic generation crystal. A block of La3Ga5SiO14(LGS) crystal is used as a Q-switch. The 1.29 W output power of 355 nm is obtained at the pump power of 20.4 W and repetition frequency of 10 kHz with pulse width as short as 9.6 ns. The optical-optical transformation efficiency is about 6.3%.