An anti-overflow device at a drum water injection port and a drum washing machine, wherein the anti-overflow device comprises a water flow baffle (1), the water flow baffle (1) extends along an outer drum (5) to an inner drum (6) and is installed at the water injection port, and water flow is blocked to run back into the water injection port along with the inner drum (6) at a high speed. The anti-overflow device further comprises a blocking rib (2), and the blocking rib (2) is arranged on the inner side of the water injection port and close to the outer drum (5). The drum washing machine comprises the anti-overflow device at the drum water injection port. The anti-overflow device at the drum water injection port is simple in structure, and is high in reliability; the components are simple, and the economic efficiency is good; the principle of fluid mechanics is adopted in the anti-overflow device at the drum water injection port, the change of liquid flow in the drum is realized, and the anti-overflow effect is good.
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