Artificial　synaptic　devices　have　been　developed　to　simulate　biological　synapses,　while　the　connections　in　different　synapses　are　different　in　strength,　which　is　usually　ignored　in　current　research　of　artificial　synapses.　Here,　we　develop　organic　synaptic　transistor　array　in　a　single　wafer　using　inkjet-printing　to　simulate　synaptic　behavior　with　one　presynaptic　membrane　and　multiple　postsynaptic　membranes.　By　regulating　droplet　spacing　during　inkjet-printing,　synaptic　array　with　varying　synaptic　behavior　can　be　achieved.　This　new　type　of　synaptic　transistor　array　enriches　the　diversity　of　neuromorphic　devices　and　provides　a　new　direction　for　the　construction　of　next-generation　neural　networks.