In practice, the shell of Saxidomus purpuratus has multiple applications, including medicinal use, craft decoration, and shell tableware. The details are as follows:

It mainly contains calcium carbonate and conchiolin. It has the effects of softening hard lumps and resolving masses, as well as clearing heat and resolving phlegm. In traditional medicine, it can be used to treat symptoms such as cough and excessive phlegm, and can also be used externally to treat sores and ulcers.

In shell carving craftsmanship, it can be used to make shapes like flowers. The inner surface of its shell is purple-white, which has certain ornamental value. However, it is easy to crack during polishing, resulting in high loss.

Due to its unique shell shape, it can be used as a container for holding food after being cleaned. For example, when making some seafood dishes, fill the cleaned "swan egg" shells (a common local name for Saxidomus purpuratus shells) with fillings for cooking or directly use them as serving plates. This method is not only fresh and unique but also eye-catching.