The invention provides a carding machine with a pre-drafting can coil, which comprises a pre-drafting device and the can coiler of a bobbin changing device, wherein the bobbin changing device is a linear bobbin changing device; the pre-drafting device employs three over three and guide roll two-zone drafting. The carding machine disclosed by the invention is simple and compact in structure, takes up small area, satisfies the demand on yield increase, and is convenient in operation.