White sugar and rock sugar are all extracted from sugar cane and sugar beet, which belong to the category of sucrose. White sugar is made of brown sugar through washing, centrifugation, honey separation and stripping. Rock sugar is formed by recrystallization of white sugar under certain conditions. Their chemical composition is sucrose.

2, the difference in appearance

White sugar is mostly sold in bulk, while rock sugar is sold in pieces.

3. There are also some differences in efficacy.

White sugar is sweet and flat. Proper consumption can promote the absorption of calcium by human body, and can remove bad breath and promote body fluid production. Besides being used as a flavoring agent, white sugar can also be used to wash face, which has the beauty effect of whitening and exfoliating. Rock sugar is also sweet and flat. Its main functions are moistening the lungs and relieving cough, nourishing yin and moistening dryness, and removing fire. Besides, it can also tonify the middle energizer, invigorate the spleen and regulate the stomach.

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