Coherent Anti-stokes Raman Scattering (CARS) technology measured temperature through pulses cumulation of pump laser in the past decades.The measurement period was up to ten seconds or even longer.This method will cause relative large error once used in unstable temperature field diagnosis.Based on single-pulse CARS technology,the temperature measurement appliance which introduced broadband laser source (>200cm-1) was developed.The appliance can get the whole CARS signal spectrum during a pulse width and measure the temperature instantaneously.