The time-resolved emission spectrum of laser induced Ni plasma is measured at atmospheric pressure using a femtosecond laser with pulse width of 30 fs and wavelength of 800 nm. The electron temperature of Ni plasmas and its temporal evolution are obtained through the relative intensity of Ni emission spectrum lines. In addition,the temporal evolution of Stark broadening and Stark shift of the spectrum lines are also obtained. It is shown that the electron temperature varies from 7500 to 4500 K when the time delay is in the range from 110 to 610 ns,which is different with the dynamic characteristics of nanosecond laser induced plasmas.