Measuring device and measuring method for welding temperature field

The invention provides a welding temperature field measuring device and method.The welding temperature field measuring device comprises a weldment, a temperature detecting element, a temperature collecting instrument and a thermometer, the weldment is provided with a welding seam and three rows of measuring points, the three rows of measuring points are parallel to the welding seam, and the temperature detecting element is arranged on the temperature collecting instrument; the three rows of measuring points are sequentially arranged at intervals in the direction away from the weld joint, and each row of measuring points comprises a plurality of measuring points arranged at intervals; the temperature detection elements are arranged at the measuring points in a one-to-one correspondence manner; the temperature detection piece is connected with the temperature acquisition instrument; the thermometer is used for measuring the temperature of the contact part of each temperature detection element and the weldment.