Soft plant foods and a method of producing the same are revealed. The method includes steps of (a) providing a plant food; (b) immersing the plant food in a decomposition-enhancing enzyme solution; (c) performing a plurality of instances of high-pressure treatment on the plant food immersed in the decomposition-enhancing enzyme solution; (d) allowing the plant food having finished step (c) to react at 40 to 65° C. for 20 to 60 minutes; and (e) applying a pressure of at least 400 MPa on the plant food having finished step (d) for 3 to 10 minutes. The method is effective in speeding up the production process and preventing loss of nutrients of the plant foods.