1, tapping sound, tap the watermelon gently with your hand. If it suddenly makes a sound, it means that the watermelon is ripe. If it makes a fluffy sound, it means that the watermelon is still raw.

2, watermelon texture, watermelon skin is covered with watermelon texture, generally the texture is clear, and the circle at the bottom of watermelon is sunken, indicating that watermelon is mature, otherwise it means immature;

3, the epidermis, gently touch with your hand to see if the epidermis of watermelon is smooth, the watermelon with smooth epidermis indicates that it is mature, if the surface of watermelon is prickly or sticky, it means that it is not mature or over-ripe;

4, watermelon appearance, if the watermelon skin is horizontal and curved, then watermelon is definitely not delicious, you should choose a watermelon with symmetrical appearance;

5, the shape of the vine, each watermelon will have a vine, if the vine is straight, it means that the watermelon is not mature, otherwise, if the vine is circled, it means that the watermelon is mature;

6, pulp color, directly cut the watermelon into two halves, observe the color of the pulp, generally the brighter the watermelon, the more mature it is. If the watermelon pulp looks less water, it means that the watermelon is not mature.