The Tarim Basin's fractured-vuggy reservoirs have been discovered on a large scale in recent years, with annual production reaching tens of millions of tons. However, due to the complex interrelationships of reservoir pores, fractures, and cavities, the evaluation of the reserves and types through conventional waterflooding methods remains highly limited. Due to the significant differences between actual fractured-vuggy reservoirs models and traditional water injection indication curve models that treat the reservoir as homogeneous, a new water injection indication curve model has been proposed. This model considers various types of elastic energy changes and is suitable for fractured-vuggy carbonate reservoirs driven by bottom water. By plotting the relationship curves between stratigraphical pressure and cumulative injection volume, the study established graphs depicting the average formation pressure versus cumulative injection volume under different dynamic reserves and water influx scenarios. Adjustments to the dynamic reserves and water influx were made by fitting the actual pressure trends, effectively predicting reservoir pressure changes under various injection and production intensities. The research demonstrated that the pressure changes within the fractured-vuggy reservoirs calculated by this method closely match the actual changes. The reliability of this method was validated using data from the MX1 well group, yielding more accurate dynamic reserve and water influx curves. The water injection indication curve model for bottom water driven fractured-vuggy reservoirs established in this study clarifies the replenishment of reservoir pressure and accurately assesses the energy of the water body and the scale of the reserves. It plays a crucial role in formulating rational water injection development strategies and enhancing the displacement efficiency of fractured-vuggy units.