A platform structure for an electric vehicle is proposed. More particularly, according to the platform structure for an electric vehicle, a frame configured by coupling pipes to each other to form a lattice structure is installed to have a vertical double structure, and each pipe constituting an upper frame and each pipe constituting a lower frame intersect with each other such that rigidity of the platform structure is secured and the manufacturing period thereof due to easy manufacturing is decreased to reduce manufacturing cost. The platform structure for an electric vehicle includes a frame of the platform structure configured in such a manner that pipes are coupled to each other by brackets to form a lattice structure.