The invention discloses a cold core box forming core-making machine, comprising a stander part, a sand adding device, a movable ejection head, an upper pressure head and a sand ejection mechanism, a gas bag and a pipeline connection, a movable blowing cover with the function of an upper top core, a tray dolly, an upper core box lifting mechanism and a core box dolly with the function of a lower top core. When the equipment is provided with two sets of core boxes, core sand with two different process characteristics are added through a sand adding mouth as well as cut into ejection heads of two sand ejection areas, blowing covers of two blowing areas and a relatively independent sand ejection mechanism and a relatively independent blowing mechanism in a matched way, thus realizing the synchronous production of sand type or sand core in the same equipment and the independently adjustable process parameters. When the equipment is provided with a set of large core box, the mechanisms can be used in combination, thus being capable of preparing large sand types or sand cores.