An optical termination unit is provided for allowing an optical cable to be easily projected straight in any of five directions, including upward, downward, rightward, leftward, and rearward directions, thereby enhancing the efficiency of cable laying or the like. An end securing box 150 of the optical termination unit 100 includes a two-stage multi-tiered box structure separable to two bodies, the first stage including a clamp tray 120 and the second stage including a fusion tray 130 which is provided with a lid (lid 140) thereupon. An inlet Im (m=1, 2, 3, 4, 5) for introducing the end of a second optical cable to be embedded in a wall or a pillar is provided at each face of the enclosure. Holes H1 and H2 formed on the rear face 115 are provided for securing the end securing box 150 with a nylatch n. The end securing box 150 having a rectangular solid shape has multiple holes formed therein. This allows the end securing box 150 to be secured to a rear face 115 so as to be arbitrarily oriented on a right angle basis.