Based on the multi-wavelength pyrometry, The transient temperature in the ignition zone is calculated.The temperature in the process suggests there is a twice-iugnition phenomenon. 用多光譜測溫原理計算了激光作用下點(diǎn)火區瞬時(shí)溫度,溫度變化過(guò)程表明在點(diǎn)火過(guò)程中存在二次點(diǎn)火現象。