The engineering geological properties of the rock mass change greatly because of the neodiagenesis，diagenesis difference，lithology weakness，low modulus，low strength and low bearing capacity of the Tertiary mudstone strata，which are susceptible to environmental conditions especially after unloading or excavation exposure，and the index obtained by conventional rock test methods is often lower than the true value.In this paper，according to the rock mass loading test，borehole acoustic wave velocity test and side pressure test carried out on site in Guangxi shipping hub project，the allowable bearing capacity of the foundation of the Negene mudstone in Guangxi is studied.SPSS data analysis software is used to analyze the correlation between the allowable bearing capacity of the foundation，the longitudinal wave velocity of the borehole and the rock mass integrity coefficient，and finally the relevant formula is obtained.The allowable bearing capacity of Neogene mudstone foundation can be obtained indirectly through borehole acoustic wave velocity test.The research can provide reference for similar projects.