©　2017　In　this　paper,　a　facile　method　based　on　thermal-electrical　analogy　technique　was　developed　to　solve　the　heat　flow　transfer　behavior　in　unidirectional　fiber　reinforced　polymer　composite.　A　modulating　thermal　resistance　Rmd,　correcting　the　heat　flux,　was　introduced　in　the　thermal　resistance　network　to　analyze　two-dimensional　square　arrayed　square　fiber　model　of　composite　for　its　effective　transverse　thermal　conductivity.　The　result　of　present　method　showed　a　better　agreement　with　that　of　finite　element　method　(FEM)　than　existed　parallel　or　series　thermal　resistance　network.　Around　this　consideration,　the　composite　reinforced　by　fiber　with　circular-cross　section　was　also　modeled　to　evaluate　the　transverse　thermal　conductivity,　which　still　exhibit　well　consistent　with　experimental　data.　It　indicates　that　the　proposed　method　is　enough　accurate　and　effective　for　evaluating　the　thermal　conductivity　of　unidirectional　fiber　composite　and　provides　a　facile　approach　to　understand　the　complicated　heat　flow　transfer　behavior　in　composites.