Abstract: The present invention provides a resin composition used for peelable coating and compounding process thereof. The composition includes the following components: (a) 100 parts by weight of film-forming resin containing at least one acrylic resin; (b) 0.1-40 parts by weight of at least one separating agent, which is polypropylene glycol or glycerin fatty acid ester or their mixtures; and (c) 40-60 parts by weight of at least one solvent. The peelable coating formed from the resin composition has excellent water resistance and excellent peeling performance even under the condition of prolonging storage period.