A laser diode array end pumped high power orange yellow continuous wave Nd :YVO₄dual-wavelength laser with intracavity sum-frequency mixing was demonstrated.By type I Critical Phase Matching (CPM) LBO,593 nm orange-yellow laser is obtained using 1 064 nm and 1 342 nm intracavity sum-frequency mixing.With 12 W incident pump laser,1.1 W TEM₀₀ mode orange-yellow laser output with low noise is obtained,the optical-to-optical conversion goes up to 9.2 %,the M_{2 factor is less than 1.2,and the power instability is less than±2 % within 4 h.This is the highest output power achieved at 593 nm with an intracavity sum-frequency Nd∶YVO4 laser.}