The invention discloses a production device and a production method for distribution type plant oil transesterification. The production device comprises an equipment frame, a reaction kettle, a washing tank, a catalyst recovering tank, a drier, a warm water storage tank, a heat conducting oil heating tank, a reaction circulating pump, an air pump, a material pump and a heat conducting oil pump. The production method comprises the following steps of: heating and stirring a mixture of plant fat raw material oil, low-carbon alcohol and a pyridyl trifluoromethanesulfonate ion liquid catalyst to react for 3-5 hours; standing so that reaction materials are divided into a light phase and a heavy phase, and separating the light phase from the heavy phase; standing the heavy-phase material and naturally cooling, so that the catalyst is precipitated to the bottom, and the rest is crude glycerol containing alcohol; adding warm water to the light-phase material for washing, and then standing so that the light phase and the heavy phase are formed again; and pumping the light-phase material into the drier for drying, so as to obtain the plant oil. The production method disclosed by the invention can achieve homogeneous catalysis and different-phase separation through process integration, and the yield of the plant oil is improved; and the production device disclosed by the invention is handy and simple, and is convenient for real-time processing of a dispersed raw material.