The invention relates to a production method for n-propyl acetate. The production method is characterized by including the steps that acetic acid and propyl alcohol are preheated and then enter an esterification tower to react and generate the n-propyl acetate, and the rough n-propyl acetate is obtained through condensation; the rough n-propyl acetate is preheated and then sent into a refining tower, and an n-propyl acetate finished product is prepared at the bottom of the tower; gas-phase substances on the top of the refining tower are sent into a primary oil tank after being partially condensed, and the liquid phase and the gas phase are included in the primary oil tank at the same time; low-boiling-point gas-phase components are arranged on the upper portion in the primary oil tank, the pressure of the primary oil tank is controlled, and therefore the low-boiling point gas-phase components are directly injected into the lower portion of the esterification tower through a pipeline to continue to be involved in the reaction. Part of heat sources are provided for the reaction, yield of the product can be effectively increased, and energy lost when the low-boiling-point components are circulated in a refining system for a long time is reduced. Meanwhile, by controlling the pressure of the primary oil tank, the gas phase of the refining tower can be stably used for esterification heating, and stability and operability of the system are increased.