Orange juice has a high nutritional value and has become the most popular juice in the world, accounting for about two-thirds of the world's juice production. The prospect of citrus juice processing is bright, and the market potential is huge. However, due to the variety, raw materials and processing technology, orange juice has a bitter taste, high acidity and poor quality. The bitter ingredient in orange juice is mainly produced in a four-ring three-string called limonin. . The resin method has obvious effects in removing bitterness and has many advantages, and has been widely used.