Method for manufacturing a polymerizable composition and a resin molded article

Providing a mixture of formed by cooling and solidifying the polymerizable composition containing a norbornene-based monomer and a metathesis polymerization catalyst. Preferably, the freezing point of the norbornene monomer is at 20 ° C. or more, and preferably, the metathesis polymerization catalyst is a ruthenium carbene complex. According to the present invention, excellent storage stability, and can provide a polymerizable composition which enables industrial production of fine resin molding with excellent quality stability.