The utility model discloses a steel bar connection node of an embedded foundation bottom board for a concrete support. Transverse pre-embedded steel bars and vertical pre-embedded steel bars are respectively arranged at a position in the concrete support, which corresponds to steel bars of the foundation bottom board. According to the steel bar connection node provided by the utility model, the transverse pre-embedded steel bars and the vertical pre-embedded steel bars are respectively arranged at the position in the concrete support, which corresponds to the steel bars of the foundation bottom board. Therefore, when the steel bars of the bottom board are constructed, the problem that the bottom board and the steel bars are supported in a contact manner but cannot be communicated with each other can be effectively solved by connecting the pre-embedded steel bars with the steel bars of the bottom board, so that the construction process of the steel bars at the position is simplified; the construction quality of the bottom board is ensured; the construction schedule of the bottom board is accelerated; and the construction cost is reduced.