The present invention relates to a current measuring technique, and particularly to a Hall sensor temperature compensation method for an automobile, a Hall sensor based on the principle of the compensation method, and an automotive electronic control system with the Hall sensor. The Hall sensor temperature compensation method for the automobile according to the invention comprises the following steps: receiving a voltage measuring signal of the Hall sensor; acquiring a temperature measuring signal next to the Hall sensor; if the temperature is within a preset range, calculating a correction value of the current to be measured according to an analysis formula, and otherwise, and calculating the correction value of the current to be measured by means of a nerve network model. According to an embodiment of the invention, different compensation methods are adopted for different temperatures, and the Hall sensor temperature compensation method is suitable for larger temperature range. The compensated current is calculated in the preset range by means of a specific analysis formula. The Hall sensor temperature compensation method has the following advantages: convenient realization, high speed and high precision.