The invention relates to a fracturing packer for a barefoot well, comprising an upper connector, an upper rubber cylinder sheath, an inner pipe, a rubber cylinder, a lower rubber cylinder sheath, a one-way pressure limiting valve body, a one-way valve, a pressure limiting valve and a lower connecter, wherein the rubber cylinder is sleeved outside the inner pipe, the upper connector, the inner pipe, the one-way pressure limiting valve body and the lower connector are sequentially connected, the lower part of the upper rubber cylinder sheath covers the upper part of the rubber cylinder, the upper part of the upper rubber cylinder sheath is sleeved outside the upper connector, the upper part of the lower rubber cylinder sheath covers the lower part of the rubber cylinder, the lower part of the lower rubber cylinder sheath is sleeved outside the one-way pressure limiting valve body, the one-way pressure limiting valve body is provided with a vertical hole channel and a radial communicated hole, the vertical hole channel and the radial communicated hole are communicated, the one-way valve is installed on the vertical hole channel, and the pressure limiting valve is installed under the vertical hole channel. Duo to the pressure limiting valve, overpressure of the rubber cylinder is prevented, long-term effective working of the rubber cylinder is ensured, thereby the invention is suitable for fracturing operation of the barefoot well in an oil field; and the rubber cylinder is permanently kept in an expansion status by designing the one-way valve, therefore, the invention is suitable for the requirements for permanently plugging the bottom of the barefoot well in the oil field.