A design of LD-pumped Nd∶YVO_4 laser that generates simultaneous laser action at the wavelengths 1064 nm and 1342 nm by optimizing film design is presented .An optimized CW 593.5 nm yellow laser at room temperature is obtained for the first time.Using type-I critical phase-matching LBO crystal,593.5 nm yellow laser is obtained by 1064 nm and 1342 nm intracavity sum-frequency mixing.The maximum laser output power of 85 mW is obtained when a incident pump laser of 1.8 W is used.The optical-to-optical conversion up to 4.7%,the power instability in 24 h better than ±2.8%.