The analysis of code tracking accuracy for CCRW（code correlation reference waveform）from the literature is mainly on the assumption for the infinite channel bandwidth and the simulation that how the gate width parameters affect the code tracking accuracy. Therefore, the analytical expression of code tracking accuracy was derived. The effect of signal channel bandwidth on CCRW tracking accuracy was analyzed and verified. The analysis shows that the code tracking accuracy with unlimited channel bandwidth can be improved by reducing the width of the gate wave, but there is an optimal value of the gate width in the bandlimited condition. The research results can be used to guide CCRW algorithm design for GNSS receivers．