Conjugated　polymers　consisting　of　diketopyrrolopyrrole　(DPP)　units　have　been　successfully　applied　in　field-effect　transistors　(FETs)　and　polymer　solar　cells　(PSCs),　while　most　of　the　DPP　polymers　were　designed　as　symmetric　structures　containing　identical　aromatic　linkers.　In　this　manuscript,　we　design　a　new　asymmetric　DPP　polymer　with　varied　aromatic　linkers　in　the　backbone　for　application　in　FETs　and　PSCs.　The　designation　provides　the　chance　to　finely　adjust　the　energy　levels　of　conjugated　polymers　so　as　to　influence　the　device　performance.　The　asymmetric　polymer　exhibits　highly　crystalline　properties,　high　hole　mobilities　of　3.05　cm＜sup＞2＜/sup＞　V＜sup＞-1＜/sup＞　s＜sup＞-1＜/sup＞　in　FETs,　and　a　high　efficiency　of　5.9%　in　PSCs　with　spectra　response　from　300　to　850　nm.　Morphology　investigation　demonstrates　that　the　asymmetric　polymer　has　a　large　crystal　domain　in　blended　thin　films,　indicating　that　the　solar　cell　performance　can　be　further　enhanced　by　optimizing　the　microphase　separation.　The　study　reveals　that　the　asymmetric　design　via　adjusting　the　aromatic　linkers　in　DPP　polymers　is　a　useful　route　toward　flexible　electronic　devices.