The invention discloses a domestic trash can which comprises a trash can body, wherein a shell body is fixedly connected to the bottom of the inner side of the trash can body, air exhausting openingsare in through connection to the two sides of the shell body, the sides, far from the shell body, of the two air exhausting opening respectively penetrate through the inner side of the trash can bodyand are aligned at the outer side of the trash can body, a motor is fixedly connected to the bottom of an inner cavity of the shell body, and a fan is fixedly connected to the output end of the motor.The domestic trash can achieves the purpose of separating sewage from rubbish in the trash can through matched use among the trash can body, the shell body, the air exhausting openings, the motor, the fan, a telescopic rod, a water tank, a heater, a heating rod, a sleeve, an air sucking pipe, a suction fan, a sliding block, a short plate, a leakage plate, an inner barrel, a vertical pipe, a coverplate, a spring, a push plate, a push rod and a press plate; the sewage and clean water are neutralized and exhausted out after being evaporated, bacterium breeding is delayed, and the trash can hasno heavy peculiar smell.