It is reproted that the Mn²⁺ sulphonic acid solution is electrooxided to Mn³⁺ in non-membrane electrolytic cell by indirect electrooxidation method. Then the Mn³⁺ solution is mixed with 4-fluor toluene to prduce 4-fluoro-benzaldehyde. Purified mother-liquid returns to cell and used cyclically and no pollution. Emusifying stirrer is applied to organic electro chemistry and result is satified. Literatures about this are not look up. On the condition electrolytic yield >60%, out side cell reaction yield >80%.