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The application relates to the technical field of laser marking machines, in particular to a laser marking machine capable of automatic positioning, which comprises a machine body, a marking assembly is installed at the top end of the machine body, a switching structure is installed in the machine body, an opening and closing structure is installed on the machine body, a discharging structure is arranged on the opening and closing structure, a material collecting structure is installed at the side end of the machine body, a dismounting structure is arranged on the material collecting structure, a pushing material structure is installed at the side end of the switching structure, and a material lifting structure is further installed on the switching structure; the switching structure installed on the machine body can meet different use requirements, thereby expanding the application range of the device; the switching structure can synchronously drive the opening and closing structure to act at the same time, the opening and closing of the platform plate can be realized when the storage box is lifted, manual opening of the platform plate is not needed, and therefore the work efficiency can be greatly saved.