The invention discloses a solar triple-hulled vessel which comprises a main hull, two demihulls, connecting bridges and solar panels. The two demihulls are symmetrically distributed on the two sides of the main hull. Each demihull is connected to the outer side of the main hull through two corresponding connecting bridges. The solar panels are arranged on the two sides of the main hull, the two demihulls and the connecting bridges. The head portion of the main hull is of a streamline flat bottom structure, and the tail portion of the main hull is of a square structure. The two demihulls are each of a long-shuttle-shaped structure. By the adoption of the solar triple-hulled vessel, the beneficial effects that the triple-hulled vessel is large in supporting area and good in stability are fully used, more solar panels are arranged, energy is self-sufficient, the solar triple-hulled vessel is green and environment-friendly, energy is saved, and emission is reduced.