The invention discloses an ultra-thick bed sintering method for reducing sinter return ratio and employing presintering; ignition temperature is optimized, a suitable amount of insulation covers are provided, high-oxygen hot air is introduced, surface ignition quality of upper and lower beds of sinter can be effectively improved, mineralizing time of surface sinter can be extended, and cold brittleness of the sinter is reduced; through reasonable coal allocation and water regulation for the upper bed of sinter mixture and reducing the amount of rolls of a distributor, better breathability is provided for the upper bed of sinter mixture; according to the features of the upper bed of mixture, bed combustion and particle size deviating is inhibited, and the bed never combusts too fast; through comprehensive technical means, it is possible to effectively decrease the return ratio of the upper bed of sinter and the whole bed of sinter.