The application refers to process for production of a nano-microemulsion system of plant oil triglycerides, including: (i) preparing a dispersed phase plant oil triglyceride; (ii) preparing a carrier made from a mixture of propylene glycol monocaprylate and lecithin by a weight ratio of 5-6:1-1.5; (iii) adding the carrier to the dispersed phase by a weight ratio of 3-4:1-1.5, wherein the dispersed phase temperature is maintained between 60-100° C. while stirring under vacuum, followed by introduction of the whole mixture through the high-pressure microjet homogenizer; (iv) adding Tween 80 and Tween 60 to the solution mixture obtained in step (iii) by a weight ratio of 3-4:1-1.5:1-1.5, wherein the temperature of the dispersed phase is continuously maintained between 60-100° C. while stirring under vacuum; and (v) forming a nano-microemulsion system of plant oil triglycerides by cooling the mixture, followed by homogenization of the mixture by ultrasonication to achieve a droplet size of less than 100 nm, quality control of the resultant product by dissolution thereof in water and measurement of the transparency, in which if the required transparency is not met, continue to heat and measure the transparency until the required transparency is met, then stop the reaction, and emulsification of the mixture to obtain a nano-microemulsion system of plant oil triglycerides.