Huang, S. Jia, H.Y. JACoW Publishing Geneva, Switzerland The DC-SRF photocathode gun is a distinguished compact MeV electron source capable of generating picosecond to sub-picosecond electron pulses at MHz to 100 MHz repetition rate. With the goals to achieve low-emittance CW operation and to generate high average current electron beam, the second-generation DC-SRF gun, DC-SRF-II, has been developed. Efforts have been made recently to optimize the performance of the gun. In this work, we present the commissioning of the DC-SRF-II gun, with the focus on beam dynamics and related issues.