The invention provides an Fe-MCM-22 molecular sieve catalyst based on organic wastewater treatment and a production process of the Fe-MCM-22 molecular sieve catalyst. The production process comprisesthe following steps that (1) Fe-MCM-22 molecular sieve crystalline grains are ultrasonically dispersed in an ethanol solution containing phenolic resin, soaked for 190-240 min, subjected to centrifugation and filtration, then taken out and dried for 3 h in air at 90-100 DEG C; the above step is repeated 4-6 times; (2) a solid product obtained in step (1) is subjected to heat treatment of 400-500 DEG C for 1-1.5 h under the N2 atmosphere, so that the phenolic resin is carbonized and carbon is deposited on the surface of an Fe-MCM-22 molecular sieve to form a layer of carbon film, and the Fe-MCM-22 molecular sieve is obtained; the Fe-MCM-22 molecular sieve is provided with two independent pore channel systems, one pore channel system comprises twelve-membered ring large supercages, and by superposing six-membered rings, the supercages are stacked with one another one by one and penetrate through an approximately elliptic ten-membered ring window; the other pore channel system is a two-dimensional sinusoidal wave-shaped pore channel of which the effective bore diameter is a ten-membered ring, and is surrounded by the superposed six-membered rings connected with the supercages.