A study was conducted to see how spraying micronutrients and growth regulators on litchi trees before harvest affects fruit yield. The results showed that using certain plant hormones and nutrients helped increase the number of fruits, reduce fruit drop and cracking, and improve fruit size and weight. The best results were seen with a spray of NAA at 20 ppm, which led to the highest fruit yield per tree and the largest fruits. Overall, spraying these substances on litchi trees can significantly boost the orchard's productivity.