Based　on　the　theory　of　the　optical　phased　array　(OPA)　and　behavior　of　the　mode　propagation　in　Ti-diffused　Lithium　Niobate　(Ti_LiNbO3)　waveguide,　a　novel　array　of　integrated　optical　waveguides　applied　in　OPA　system　was　proposed.　According　to　the　beam　propagation　method　(BPM)　and　the　existing　semiconductor　technology　and　parameters,　optical　characteristics　of　the　waveguide　array,　loss　characteristics,　and　coupling　characteristics　were　simulated.　The　structure　of　phased　array　parameters　was　presented.　Simulation　result　shows　that　the　OPA　based　on　the　array　of　integrated　optical　waveguides　performs　well.　This　array　of　integrated　optical　waveguides　can　steer　consequently　and　precisely　with　the　steering　angle　of　more　than　±4.5°.　The　half-wave　voltage　is　less　than　6　V,　and　the　control　unit　has　low　loss　and　quick　response.