Provided are an oil seal installation structure for washing machines and a washing machine, the oil seal installation structure for washing machines includes at least three oil seals (3, 4, 5) provided on a main shaft of the washing machine at intervals, the oil seals (3, 4, 5) are disposed between a rear portion of an inner tub of the washing machine and a first bearing (2) closing to the inner tub. Seal lips of the oil seals (3, 5) disposed at both ends face a sealing region (6) of the main shaft, and the seal lip of at least one oil seal (4) disposed in the middle faces away from the sealing region (6) of the main shaft. The oil seal installation structure for washing machines has a good water-proof and dust-proof effect, and is simple in structure, which leads to a longer life service and a better reliability for washing machines.
