Colored conical emission (CCE) is an attractive nonlinear phenomenon, which is induced during intense ultra-short pulses propagating in nonlinear medium. A detailed experimental study on the generation of CCE in type-Ⅰ β-barium borate (BBO) crystal pumped by femtosecond pulses is reported. A physical model based on CCE is constructed, it numerically calculates the conical angle with different wavelengths and the spectral characteristics of CCE is analyzed. The influence of parametrics on the characteristics of CCE is discussed in details. With the pumped intensity decreasing and the pulse incident angle increasing, the central wavelength of the CCE spectrum has a red shift based on the numerically simulation. The observation shows that the CCE is originated from spontaneous parametric down conversion of second harmonic pulses.