In　this　paper,　the　phenomenon　of　the　flow　pattern　in　the　channel　changes　when　the　electric　field　force　exists.　Through　the　visual　observation　in　the　experiment,　it　is　found　that　the　study　found　that　the　bubble　behavior　was　suppressed　by　the　electric　field　force.　When　the　electric　field　is　large　enough,　the　working　fluid　in　the　channel　will　always　maintain　a　single-phase　liquid　flow.　However,　When　there　is　enough　superheat　at　the　bottom　of　the　mini-channel,　the　liquid　film　at　the　bottom　of　the　liquid　phase　changes　to　a　vapor　phase,　and　the　dryout　appears　in　the　channel,　and　it　rapidly　changes　into　a　mist　flow　as　the　heating　power　increases.　This　phenomenon　of　flow　pattern　change　due　to　electric　field　force　is　referred　to　herein　as　a　flow　pattern　special　phenomenon.　Due　to　the　existence　of　this　special　flow　phenomenon,　the　temperature　difference　between　the　inlet　and　outlet　of　the　working　fluid　in　the　channel　has　a　large　change.　Through　calculation,　it　is　found　that　the　dimensionless　temperature　difference　between　the　inlet　and　outlet　at　a　voltage　of　200　V　is　1.67　times　that　of　0　V.　At　the　same　time,　the　channel　heat　transfer　coefficient　increases　with　the　increase　of　voltage.　©　2020　Elsevier　Ltd