PROBLEM TO BE SOLVED: To enable reduction of the number of steps in attaching a support member supporting a strut member to a bonnet and vibration sound occurring between a partition member and the bonnet.SOLUTION: A bonnet structure of a working vehicle includes a double-side adhesive member 45 which has a first adhesive surface 45A adhered to the side of the inside surface 23D of a bonnet 23 and a second adhesive surface 45B adhered to the side of a support member 40 supporting a strut member 37 in a freely oscillating way and a partition member 25 partitioning the internal space of the bonnet 23 into two spaces when the bonnet 23 is in a closed attitude. The partition member 25 is arranged in such a way as to come in contact with the double-side adhesive member 45 from the side of the second adhesive surface 45B, inside the bonnet in a closed attitude.COPYRIGHT: (C)2014,JPO&INPIT【課題】突っ張り部材を支持する支持部材をボンネットに取り付ける際の工数を削減でき、かつ、仕切部材とボンネットの間に発生する振動音を低減できるようにする。【解決手段】ボンネット23の内面23D側に接着される第一接着面45Aおよび突っ張り部材37を揺動自在に支持する支持部材40側に接着される第二接着面45Bを有する両面接着部材45と、ボンネット23を閉姿勢にしたときに、ボンネット23の内部空間を2つの空間に仕切る仕切部材25が備えられ、仕切部材25は、閉姿勢にされたボンネット23の内側において、両面接着部材45に対して第二接着面45B側から当接するように配置されている。【選択図】図6