The invention provides a supporting head which is used for supporting a floor unit. The supporting head comprises a first supporting part and limiting parts; the first supporting part is used for bearing a vertex angle of the floor unit; a plurality of vertical through threaded holes are formed in the first supporting part; a plurality of the limiting parts are distributed on the periphery of the first supporting part and are fixedly connected with the first supporting part; the limiting parts are used for transversely positioning two adjacent flanges in a horizontal plane; the supporting head used by a network elevated unit is simple in structure; the supporting head is low in possibility of aging in long-term use under the condition of keeping relatively low production cost; moreover, the supporting head is completely fireproof, so that a potential safety hazard is stopped; in addition, the supporting head is not a plastic piece, the threaded holes can be formed in the supporting head, the pressure of the vertex angle of the floor unit is born on the supporting head, and the vertex angle is fixed through the threaded holes, so that the elevated floor which is completely paved is more stable in structure; severe resilience caused by vibrating is avoided; abnormal sound is prevented.