Quantum　dot　light　emitting　diodes　(QLEDs)　are　increasingly　attractive　owing　to　their　compatibility　with　the　inkjet　printing　process　and　potential　application　in　low-cost　large-area　full-color　pixelated　display.　The　strategy　for　controlling　the　morphology　of　the　quantum　dot　layer　is　definitely　critical　for　realizing　all-solution　processed　QLEDs　with　high　performance,　which　certainly　requires　in-depth　thinking　regarding　the　design　of　ink　composition　and　their　optimization　in　the　printing　process.　Herein,　by　carefully　controlling　the　quantum　dot　ink　composition　and　physico-5　chemical　properties,　we　demonstrate　that　the　viscosity,　contact　angle,　and　the　three-phase　contact　line　moving　would　affect　the　final　morphology　of　the　quantum　dot　film　formed　by　inkjet　printing.　We　achieved　coffee　ring-free　and　low-roughness　quantum　dot　film,　and　all-solution　processed　QLEDs　with　normal　structure　were　fabricated　for　the　first　time.　The　devices　have　a　low　turn　on　voltage　of　2.0　V,　a　luminance　of　12100　cd/m(2)　at　the　voltage　of　12　V,　and　a　maximum　current　efficiency　of　4.44　cd/A　at　the　luminance　of　1974　cd/m(2),　which　is　the　best　result　to　date　for　inkjet-printed　red　QLEDs.　The　results　will　pave　the　way　for　future　application　of　inkjet　printing　in　solution　processed　pixelated　QLED　display.