PROBLEM TO BE SOLVED: To provide a cartridge type dispenser suited to inject a viscous material which keeps a piston from readily coming off a cartridge body and can inject contents in a smooth operation.SOLUTION: In the cartridge type dispenser including the cartridge body 1 having a charge space M for contents and having an injection nozzle 1a at a tip and the piston 2 slidably disposed in the charge space M of the cartridge body 1 to push the contents in the charge space M out from the tip of the injection nozzle 1a under the application of a pushing force, the piston 2 comprises a slider 2a for directly pressing the contents in the charge space M, and a base part 2c separably coupled to a rear end of the slider 2a and fitted in an inlet end 1b of the cartridge body 1 to hold the charge space M sealed.
