A method for coating an automobile body, comprising: a base-coating coating step of simultaneously coating a base coating on both parts among a resin part and a steel sheet part of an automobile body to form a base coating film thereon; a clear-coating coating step of simultaneously coating a clear coating composition on both parts among the resin part and the steel sheet part on which the base coating film was formed to form a clear coating film thereon; and a curing step of baking the clear coating film to cure, wherein the clear coating composition comprises: a base resin containing acrylic polyol; a crosslinking agent consisting of an active methylene-type blocked isocyanate and melamine resin; and a curing catalyst that contains dibutyltin dilaurate as a blocked isocyanate curing catalyst, and p-toluene sulfonic acid as a melamine curing catalyst, wherein a mass ratio of the base resin to the melamine resin is 1.5 to 9.0, and when defining a total of mass percentage of the base resin and mass percentage of the melamine resin in the composition as 100% by mass, the minimum value for mass percentage of the active methylene-type blocked isocyanate in the composition is calculated according to formula below, and the maximum value thereof is calculated according to formula below. Minimum value = − 4.13 × mass ratio of base resin to melamine resin + 38.52 Maximum value = 1.74 × mass ratio of base resin to melamine resin + 43.21 a base-coating coating step of simultaneously coating a base coating on both parts among a resin part and a steel sheet part of an automobile body to form a base coating film thereon; a clear-coating coating step of simultaneously coating a clear coating composition on both parts among the resin part and the steel sheet part on which the base coating film was formed to form a clear coating film thereon; and a curing step of baking the clear coating film to cure, wherein the clear coating composition comprises: a base resin containing acrylic polyol; a crosslinking agent consisting of an active methylene-type blocked isocyanate and melamine resin; and a curing catalyst that contains dibutyltin dilaurate as a blocked isocyanate curing catalyst, and p-toluene sulfonic acid as a melamine curing catalyst, wherein a mass ratio of the base resin to the melamine resin is 1.5 to 9.0, and when defining a total of mass percentage of the base resin and mass percentage of the melamine resin in the composition as 100% by mass, the minimum value for mass percentage of the active methylene-type blocked isocyanate in the composition is calculated according to formula below, and the maximum value thereof is calculated according to formula below. Minimum value = − 4.13 × mass ratio of base resin to melamine resin + 38.52 Maximum value = 1.74 × mass ratio of base resin to melamine resin + 43.21 a base resin containing acrylic polyol; a crosslinking agent consisting of an active methylene-type blocked isocyanate and melamine resin; and a curing catalyst that contains dibutyltin dilaurate as a blocked isocyanate curing catalyst, and p-toluene sulfonic acid as a melamine curing catalyst, wherein a mass ratio of the base resin to the melamine resin is 1.5 to 9.0, and when defining a total of mass percentage of the base resin and mass percentage of the melamine resin in the composition as 100% by mass, the minimum value for mass percentage of the active methylene-type blocked isocyanate in the composition is calculated according to formula below, and the maximum value thereof is calculated according to formula below. Minimum value = − 4.13 × mass ratio of base resin to melamine resin + 38.52 Maximum value = 1.74 × mass ratio of base resin to melamine resin + 43.21