The invention discloses a charging method for a sub-module-hybrid type converter. The charging method disclosed by the invention has the advantages that by a half-control charging link of gradually transforming full-bridge sub-modules from a blocked state into a half-blocked state in the charging process, the voltage of half-bridge sub-modules is increased to reach a starting working point of self-power supplies of the half-bridge sub-modules at an uncontrolled stage of the half-bridge sub-modules, so that the starting working point of the self-power supplies of the half-bridge sub-modules is increased, and the design difficulty of the self-power supplies of the sub-modules is reduced. The invention also discloses another charging method for the sub-module-hybrid type converter. The purpose can be similarly realized by a half-control charging link of gradually transforming the full-bridge sub-modules from a blocked state into a bypass state in the charging process.