The　paper　introduces　the　working　principle　of　a　logging　instrument,　and　according　to　the　working　principle　and　instrument＇s　function　of　two-way　hydraulic　control　valve.　Facing　to　the　key　problems　of　process　equipment　in　the　actual　service　and　workflow,　the　structure　of　value　was　designed　and　optimized.　According　to　the　basic　functions　and　physical　model　of　dual-channel　and　two-way　hydraulic　control　valves,　we　used　hydraulic　system　simulation　software　to　establish　the　mathematical　model　of　the　entire　system.　Besides,　we　maked　the　simulation　of　the　running　state　based　on　the　Running　results.　At　the　same　time,　on　the　grounds　of　theoretical　calculations　and　simulation　results,　the　influences　of　the　body　affected　by　the　external　factors　in　work　environment　were　assessed,　and　the　logging　instrument　with　a　dual-channel　and　two-way　hydraulic　control　valve　is　designed　and　processed.　Meanwhile,　we　build　an　experimental　platform　and　make　the　experiment　according　to　principle　of　the　instrument.　The　results　show　that　the　design　of　this　dual-channel　and　two-way　hydraulic　control　valve　logging　instrument　met　the　work　requirements,　and　it　has　high　reliability　in　oil　exploration,　which　could　be　promoted　and　used　in　logging　areas.