Proposed is a slat having a truss structure, the slat including: a main body provided with a stepping part which receives the load of a user, and a coupling part which is formed on both sides of the stepping part and may be fixed to a track belt; and a truss part connected to the stepping part so as to distribute the load applied to the main body. Thus, since the load applied to the stepping part is distributed by a diagonal member part and a chord member part of the truss part, the bending of the main body caused by the load is minimized, and thus damage to the main body caused by the load may be prevented.