The influence of precursor bursts preceding the rapid reconnection of the m/n = 3/2 double tearing mode (DTM) and resistivity on core pressure collapse is quantitatively analyzed using Ci-Liu-Ti, which means magnetohydrodynamics in Chinese code. Precursor bursts mitigate the rapid 3/2 DTM reconnection, thereby reducing the overall amplitude of core pressure collapse and diminishing its detrimental impact on plasma confinement. A localized stochastic zone between the inner and outer islands of 3/2 DTM, generated by precursor bursts, accelerates the radial position change of islands, thereby speeding up the core pressure collapse process. Lower resistivity enhances the rate of core pressure collapse due to intensified field stochasticity.