Beam　steering　devices　are　widely　used　in　laser　radar,　optical　communication,　free　space　optical　interconnection　and　other　fields.　But　at　present,　most　beam　steering　devices　are　large　in　size,　complex　in　structure　and　low　in　reliability,　and　then　integration,　portability　and　low　power　consumption　of　beam　steering　devices　are　the　urgent　problems　to　be　solved　in　modern　photoelectric　system.　This　paper　introduces　a　two-dimensional　beam　steering　chip　that　integrates　the　liquid　crystal　optical　phased　array　on　the　in-phased　coupled　Vertical　cavity　surface　emitting　laser　(VCSEL)　array.　The　theoretical　model　of　beam　steering　chip　is　used　finite　difference　time　domain　method　to　set　up　and　simulate.　The　beam　steering　chip　can　theoretically　achieve　two-dimensional　beam　steering,　with　a　max　deflection　range　of　4.96°.　©　2023　SPIE.