The invention relates to a method for predicting the stratum pressure of a high temperature geothermal well before drilling. The method includes: establishing a corresponding relation between a drilling depth and an actual stratum electrical resistivity on the basis of an electrical prospecting result; and accordingly predicting the stratum pressure of the high temperature geothermal well before drilling. The method can accurately and efficiently predict the stratum pressure of the high temperature geothermal well before drilling without seismic data and logging information, can effectively guide field operation, design and construction, and can improve the drilling efficiency of the high temperature geothermal well.