The invention provides a transfer mechanism and a 3D (three-dimensional) food printer. The transfer mechanism comprises a first transfer part, a first driving device, a second transfer part, a second driving device, a first transmission structure and a second transmission structure, wherein the first driving device is used for driving the first transfer part to move in a first direction; the first transfer part is arranged on the second transfer part; the second driving device is used for driving the second transfer part to move together with the first driving device in a second direction; the first driving device is arranged outside the second transfer part; the first transmission structure and the second transmission structure are mutually matched; the first transmission structure is extended in the second direction, and the second transmission structure is driven by the second transfer part to slide along the first transmission structure; the first transmission structure is connected with the first driving device, the second transmission structure is connected with the first transfer part, and the power of the first driving device is sequentially transmitted to the first transfer part through the first transmission structure and the second transmission structure. The transfer mechanism provided by the invention has the advantages that the load of the second driving device is decreased, and the electric energy is effectively saved.