An　experimental　investigation　on　heat　transfer　characteristics　for　a　micro　capillary　groove　evaporator　had　been　carried　out　in　this　paper.　The　binary　liquid　mixture　used　in　this　experiment　was　2-Methylpentane　and　methanol.　It　showed　that　when　the　liquid　mixture　mole　fraction　x1　(2-Methylpentane):x2　(methanol)　equals　to　1:9,　the　heat　transfer　effect　was　the　best.　This　kind　of　liquid　mixture　was　applied　for　all　three　evaporators　with　different　dimensions,　the　optimal　ratio　of　depth　on　width　of　micro　groove　for　the　evaporator　was　obtained.　Compared　with　the　available　results　in　the　previous　studies,　the　experimental　results　showed　that　the　temperature　of　the　chip　could　be　reduced　in　the　range　of　10-20C　at　the　same　heat　flux.　The　evaporator　could　be　capable　of　heat　dissipation　for　high　power　electronic　chips.