Conductive　silicon　rubbers　(CSRs)　are　potential　candidates　for　strain　sensor　application　owing　to　their　specific　electrical　response　and　superior　mechanical　flexibility.　In　this　work,　carbon　fiber-filled　CSRs　were　printed　by　an　extrusion　device.　Thixotropic　agent　was　added　to　modify　mobility　and　viscosity　of　the　liquid　CSR.　It　was　found　that　the　CSR　with　5　wt%　thixotropic　agent　addition　exhibited　better　shape-retention.　Fibers　in　matrix　were　observed　to　be　oriented　in　the　printing　direction　resulting　in　an　anisotropic　electrical　and　mechanical　behavior.　The　printed　CSRs　showed　better　electrical　and　mechanical　properties　along　the　orientation　direction　of　fibers.　In　particular,　the　volume　resistivity　at　the　orientation　direction　was　6.8　times　lower　than　that　at　perpendicular　direction.　Higher　tensile　strength,　larger　elongation　at　break,　and　higher　Young＇s　modulus　were　found　along　the　orientation　direction　when　the　printed　CSRs　were　stretched,　where　a　large　number　of　fibers　were　pulled　out　and　visible　holes　remained　at　the　fractured　surface.　Electrical　responses　of　the　CSRs　under　various　loadings,　including　stretching,　compressing,　bending,　twisting　and　cyclic　folding,　were　closely　related　with　deformations　of　the　CSRs.　Sandwich　strain　sensors　were　finally　fabricated　to　verify　a　practical　application　as　motion　sensor　of　the　printed　CSRs.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.