The invention relates to a double-sided flexible copper clad laminate and a production method thereof, the double-sided flexible copper clad laminate comprises a single-sided copper clad laminate, an adhesive layer which is coated on the single-sided copper clad laminate and the other copper foil or the other single-sided copper clad laminate which is coated on the adhesive layer by pressing, the single-sided copper clad laminate comprises one copper foil and a polyimide layer which is coated on the copper foil, wherein, the polyimide layer and the adhesive layer are adjacently arranged. The production method comprises the following steps: the copper foil is provided and polyamide acid and an adhesive are prepared; the polyamide acid is coated on the copper foil to prepare the single-sided copper clad laminate; the adhesive is coated between the single-sided copper clad laminate and the copper foil or the other single-sided copper clad laminate and carrying out the lamination to prepare the double-sided flexible copper clad laminate. The performances of size stability, folding resistance, anti-aging property, and the like of the double-sided flexible copper clad laminate are higher than the double-sided copper clad laminate which is produced by a traditional three-layer method, the appearance quality is better than the two-layer double-sided copper clad laminate produced by a lamination method, and the double-sided flexible copper clad laminate simultaneously has the low-cost advantage, thereby facilitating the mass production.