Modular　multilevel　converter　(MMC)　is　a　promising　topology　of　Voltage　Source　Converter　based　High　voltage　Direct　Current　(VSC-HVDC)　system　with　many　outstanding　advantages　such　as　low　switching　frequency,　low　voltage　distortion　and　harmonics.　Pre-charge　process　is　one　of　the　core　issues　of　MMC　based　system,　especially　for　the　MMC　with　DC　fault　blocking　capability.　In　this　paper,　considering　a　novel　multi-capacitor　submodule　(SM)　based　MMC　system　with　DC　fault　blocking　capability,　two　different　pre-charge　strategies　from　AC　side　are　proposed　without　any　auxiliary　power　sources.　Based　on　the　developed　pre-charge　method,　all　the　capacitor　voltages　could　be　well　balanced　and　charged　to　the　reference　value.　The　verification　of　the　proposed　strategy　was　implemented　in　Matlab/Simulink　system.