Laser-phased-array　system　provides　an　elegant　means　for　achieving　the　inertial-free,　high-resolution,　rapid　and　random　beam　steering.　In　laser-phased-array　system,　phase　controlling　is　the　most　important　factor　that　impacts　the　system　performance.　A　novel　scheme　is　provided　in　this　paper,　the　beam　steering　is　accomplished　by　using　crystal　fiber　array,　the　difference　length　between　adjacent　fiber　is　fixed.　The　phase　difference　between　adjacent　fiber　decides　the　direction　of　the　output　beam.　When　the　wavelength　of　the　input　fiber　laser　is　tuned,　the　phase　difference　between　the　adjacent　elements　has　changed.　Therefore,　the　laser　beam　direction　has　changed　and　the　beam　steering　has　been　accomplished.　In　this　article,　based　on　the　proposed　scheme,　the　steering　angle　of　the　laser　beam　is　calculated　and　analyzed　theoretically.　Moreover,　the　far-field　steering　beam　quality　is　discussed.