A microwave oven , comprising: a shell defining a cooling air inlet and a cooling air outlet therein; a compartment defining a cavity, nested in the shell and defining an open front end, a receiving space being defined between a rear plate of the compartment and a rear plate of the shell , an air intake duct being formed between a side plate of the shell and a side plate of the compartment and communicated with the cooling air inlet ; a first electric member and a second electric member disposed in the receiving space respectively; and a fan defining a first air inlet , a second air inlet opposite to the first air inlet , a first air outlet communicated with the first air inlet to define a first air blowing channel , and a second air outlet communicated with the second air inlet to define a second air blowing channel, the first air blowing channel being disposed independently of the second air blowing channel, the fan being configured to cool the first electric member via the first air blowing channel and to cool the second electric member via the second air blowing channel; wherein a compartment air inlet is formed in the rear plate of the compartment , a compartment air outlet is formed in the compartment , the microwave oven further comprises a front air guiding plate defining an end adjacent to and opposite to the first air outlet , and extending in a direction away from the first air outlet , a first air duct is formed between the front air guiding plate and the rear plate of the compartment and communicated with the compartment air inlet , the microwave oven being characterised in that the fan is disposed in the receiving space and a second air duct is formed behind the front air guiding plate and opposite to the first electric member . a shell defining a cooling air inlet and a cooling air outlet therein; a compartment defining a cavity, nested in the shell and defining an open front end, a receiving space being defined between a rear plate of the compartment and a rear plate of the shell , an air intake duct being formed between a side plate of the shell and a side plate of the compartment and communicated with the cooling air inlet ; a first electric member and a second electric member disposed in the receiving space respectively; and a fan defining a first air inlet , a second air inlet opposite to the first air inlet , a first air outlet communicated with the first air inlet to define a first air blowing channel , and a second air outlet communicated with the second air inlet to define a second air blowing channel, the first air blowing channel being disposed independently of the second air blowing channel, the fan being configured to cool the first electric member via the first air blowing channel and to cool the second electric member via the second air blowing channel; wherein a compartment air inlet is formed in the rear plate of the compartment , a compartment air outlet is formed in the compartment , the microwave oven further comprises a front air guiding plate defining an end adjacent to and opposite to the first air outlet , and extending in a direction away from the first air outlet , a first air duct is formed between the front air guiding plate and the rear plate of the compartment and communicated with the compartment air inlet , the microwave oven being characterised in that the fan is disposed in the receiving space and a second air duct is formed behind the front air guiding plate and opposite to the first electric member . <EOS>