The invention discloses a hydraulic washing machine with a triad-shaft planetary gear transmission and relates to a washing machine, a planetary gear reducer and a hydraulic machine. By the aid of the hydraulic washing machine, the technical problem of abrasion of materials washed by existing washing machines is solved, and technology biases of forward rotating, reversing rotating, transverse rotating, vertical rotating and various rotating of existing improved pulsator, double-power and drum washing machines are overcome. According to the technical scheme, the hydraulic washing machine simulates manual rubbing washing of clothes by two hands, different required rotating speeds of triad axes are output by the triad-shaft planetary gear transmission and transmitted to a pulsator, a hydraulic pump and an inner drum in a controlled mode through a clutch for different purposes, the double-action hydraulic machine is automatically protected and controlled by pressure electronic components to stretch and retract, a tray, the pulsator, a baffle ring and a drum cover are driven, the water-absorbent washed materials are squeezed and rubbed, produced water jets penetrate volumes of the washed materials in the drum, the adhesive power of dirt is damaged, and the dirt is removed, dissolved in the water and discharged from dehydration holes. The hydraulic washing machine has the advantages that the clothes can be cleaned without abrasion, and the time, the water and the electricity are saved.