In today's rapid development of science and technology, innovation and health have become the theme of the times. As a notable innovation, edible ink has attracted a lot of attention in recent years. It is a kind of ink which is safe to eat, mainly used in food printing, so that food not only is rich in taste, but also can present a unique visual effect. So what are the effects of this novel ink on the health? Is edible ink healthy? This article explores the answer.