A new process, particularly simple and economical, for FSH and LH separation and purification starting from crude HMG preferably urinary, comprising the following steps: optional exhaustion of crude HMG viral charge in aqueous EtOH; ion-exchange chromatography on weakly basic anionic resins of DEAE type; affinity chromatography on resin having an antraquinone derivative as a ligand; optional ion-exchange chromatography on strongly basic anionic resins. Hormones obtained thereby, in particularly pure form and having high specific activity, may subsequently undergo a depyrogenation step.