How　to　analytically　deal　with　the　general　entanglement　dynamics　of　separate　Jaynes-Cummings　nodes　with　continuous-variable　fields　is　still　an　open　question,　and　few　analytical　approaches　can　be　used　to　solve　their　general　entanglement　dynamics.　Entanglement　dynamics　between　two　separate　Jaynes-Cummings　nodes　are　examined　in　this　article.　Both　vacuum　state　and　coherent　state　in　the　initial　fields　are　considered　through　the　numerical　and　analytical　methods.　The　gap　between　two　nonidentical　qubit-field　coupling　strengths　shifts　the　revival　period　and　changes　the　revival　amplitude　of　two-qubit　entanglement.　For　vacuum-state　fields,　the　maximal　entanglement　is　fully　revived　after　a　gap-dependence　period,　within　which　the　entanglement　nonsmoothly　decreases　to　zero　and　partly　recovers　without　exhibiting　sudden　death　phenomenon.　For　strong　coherent-state　fields,　the　two-qubit　entanglement　decays　exponentially　as　the　evolution　time　increases,　exhibiting　sudden　death　phenomenon,　and　the　increasing　gap　accelerates　the　revival　period　and　amplitude　decay　of　the　entanglement,　where　the　numerical　and　analytical　results　have　an　excellent　coincidence.　©　2017　by　the　authors.