The invention provides a generation method and system for temperature and pressure curves. The method comprises the steps of collecting logging data in the oil production process, extracting temperature data, pressure data and depth data of an oil gas and water well from the logging data, preprocessing the depth data to obtain a relative value of the depth data, preprocessing the temperature data to obtain a relative value of the temperature data, preprocessing the pressure data to obtain a relative value of the pressure data, generating a curve chart of the temperature changing along with changes of the depth according to the relative value of the depth data and the relative value of the temperature data, and generating a curve chart of the pressure changing along with changes of the depth according to the relative value of the depth data and the relative value of the pressure data. According to the generation method and system for the temperature and pressure curves, the temperature data, the pressure data and the depth data are extracted from the logging data collected in the oil production process and are preprocessed, and therefore the technical problem that professional software in the prior art is poor in universality is solved.