The phenomenon of apple candy heart is called water heart disease (saccharification disease), which is a physiological disease of the fruit, commonly found in high altitude areas, due to the large temperature difference between day and night, resulting in the accumulation of fruit sugar, calcium, nitrogen imbalance, thus interrupting the normal habit of the fruit caused by. As long as it is not browning, there is no harm to the body, and because of the sugar aggregation, this apple is very sweet and has a very crunchy texture.

Sugar apple is how the formation of sugar apple is not a variety, not playing the sweetener, some of the apple water heart disease, also known as molasses disease, honeydew disease, is a physiological disease of the fruit, so that the heart of the fruit and the surrounding pulp hard translucent watery.

In high-altitude areas mainly due to climatic reasons, where there is a large temperature difference between day and night, as well as the plateau's unique snow mountain melt water, so that the apple core at the accumulation of transparent shape. In addition, if the harvesting bowl, so that its sugar accumulation increased, may also appear candy heart, this is not a disease.

Apple candy heart is mainly caused by physiological diseases and climatic reasons, this ice candy heart apples picked at the end of October each year, November market, this apple is not easy to store, easy to rot brown, so it is recommended that we usually buy the best amount.