The invention provides a high-precision temperature collecting circuit based on NTC temperature sensors and a method. The circuit comprises an NTC temperature sensor array, a voltage stabilization source, an AD converter, a controller, an external interface, a standard resistor array, a first switch array and a second switch array, and the first switch array and the second switch array are communicated with one standard resistor in the standard resistor array and one NTC temperature sensor in the NTC temperature sensor array respectively. The AD converter is used for collecting voltage dividing signals between the communicated standard resistor and the communicated NTC temperature sensor and carrying out analog-digital conversion. The controller is used for providing switch selecting signals and calculating the temperature values of the NTC temperature sensors. The external interface is used for providing collected data for external equipment. The circuit can obtain good precision within a wide collecting temperature range, and is low in development cost and easy to implement.