The invention relates to an energy acquisition opposite side simply supported structure power generation device clamp based on vibration. The energy acquisition opposite side simply supported structure power generation device clamp is used for experimental researches on opposite side simply supported structure energy acquisition and opposite side simply supported structures in practical engineering and mainly comprises a cross beam a, a cross beam b, a left side plate, a right side plate, an upper pressing rod, a lower pressing rod, a bearing seat and a base. The left side plate is fixedly connected with the base. The right side plate is fixedly connected with the base in a left-right sliding mode so as to adjust the distance between the left side plate and the right side plate. The cross beam a and the cross beam b are fixed to the left side plate and the right side plate in an up-down sliding mode so as to adjust the distance between the upper cross beam and the lower cross beam. The lower portion of the cross beam a and the upper portion of the cross beam b are each pasted with a magnet. The two ends of the lower pressing rod are in interference fit with an inner ring of a bearing. The upper pressing rod and the lower pressing rod are each provided with three threaded holes into which clamping screws can be screwed so that the plates can be clamped. According to the energy acquisition opposite side simply supported structure power generation device clamp based on vibration, the requirements for fixing and clamping of a bi-stable opposite side simply supported piezoelectric plate structure in the experiment process and engineering application are effectively met.