Disclosed are multilayer pellets comprising a core of a first material comprising a first thermoplastic resin and a sheath layer of a second material comprising a second thermoplastic resin, the sheath layer surrounding the core, wherein (i) the first thermoplastic resin has a melt index, measured at a temperature of 230° C. and a load of 21.2 N, of 200 g/10 min or more, provided that the melt index of the second thermoplastic resin measured at a temperature of 230° C. and a load of 21.2 N is different from that of the first thermoplastic resin or (ii) the first thermoplastic resin is a modified thermoplastic resin having a structure originating in a compound having an unsaturated group.