There are some disadvantages in the current tunable diode laser absorption spectroscopy (TDLAS), such as tuning range, tuning time and system complexity. A fast temperature tuning method of broad spectrum is developed and the dynamic wavelength of the laser is calculated precisely during the temperature tuning by means of thermo-electric cooler (TEC) and negative temperature coefficient (NTC) thermistor integrated in laser diode module. The spectral measurements of CO2 absorption lines from 6320 to 6336 cm-1 are performed at room temperature by using fiber-coupled distributed feedback (DFB) diode laser operating at 1.58 μm with measurement time less than 3 s. Eight strong absorption lines are obtained and are compared with HITRAN 2008 database, which shows that the deviations of absorption line positions, line strength and full-width at half-maximum (FWHM) are less than 1%, 3% and 6%, respectively. Additionally, the corresponding spectral parameters of 14 weak absorption lines are very consistent with those in HITRAN 2008 database.