Three-dimensional printing system, three-dimensional printing method, molding device, fiber-containing object, and production method therefor

A three-dimensional printing system (1) comprising: a head (2) to which is fed a first continuous material (FL) including resin and a second continuous material (FB) including fiber; a platform (3) upon which is laminated a printed material on the basis of the first and second continuous materials from the head; a cutting device (10) capable of cutting at least fiber; and a controller (5) that controls an operation device including at least one out of the head, the platform, and the cutting device.