[en] Photoproduction of two pions near the threshold is examined. A set of twelve independent invariant amplitudes is introduced which satisfies requirements of the Bose-statistics for pions and of the cross-symmetry for nucleons. Invariant amplitudes are obtained in two variants of the Born approximation (with pseudo scalar and pseudo vector πN coupling) and in the method of current algebra with one ''soft'' pion. In the current algebra method the cross sections of protoproduction of two charged pions near the threshold are two times as much the cross section of one charged pion production and exceed by five orders of magnitude the cross sections of photoproduction of two neutral pions