A dryer comprising: a main body; a drum rotationally placed inside the main body; a driving part configured to provide rotational force to the drum; an electrode part configured to produce an electric field inside the drum; a power supplier configured to supply power to the electrode part; an air heater configured to heat air; a blower configured to supply heated air into the drum; a controller configured to: control the power supplier to block power supplied to the electrode part depending on a dried state of an object contained in the drum, control the driving part to rotate the drum, and control the air heater and the blower to supply heated air into the drum and characterized by: a first air inlet formed underneath the drum around the electrode part; a second air inlet formed in a rear side of the drum; an air inflow path arranged underneath the drum and through which air flows into the drum; a first air supply path having one end connectable to the air inflow path and another end connected to the first air inlet; a second air supply path having one end connectable to the air inflow path and another end connected to the second air inlet; and a flow path open/shut part (219, 239), wherein the flow path open/shut part (219, 239) is configured to: connect the first air supply path to the air inflow path when the power supplier is operating, and connect the second air supply path to the air inflow path when the power supplier is not operating, and wherein the air heater is installed in the second air supply path. a main body; a drum rotationally placed inside the main body; a driving part configured to provide rotational force to the drum; an electrode part configured to produce an electric field inside the drum; a power supplier configured to supply power to the electrode part; an air heater configured to heat air; a blower configured to supply heated air into the drum; a controller configured to: control the power supplier to block power supplied to the electrode part depending on a dried state of an object contained in the drum, control the driving part to rotate the drum, and control the air heater and the blower to supply heated air into the drum and characterized by: a first air inlet formed underneath the drum around the electrode part; a second air inlet formed in a rear side of the drum; an air inflow path arranged underneath the drum and through which air flows into the drum; a first air supply path having one end connectable to the air inflow path and another end connected to the first air inlet; a second air supply path having one end connectable to the air inflow path and another end connected to the second air inlet; and a flow path open/shut part (219, 239), wherein the flow path open/shut part (219, 239) is configured to: connect the first air supply path to the air inflow path when the power supplier is operating, and connect the second air supply path to the air inflow path when the power supplier is not operating, and wherein the air heater is installed in the second air supply path. control the power supplier to block power supplied to the electrode part depending on a dried state of an object contained in the drum, control the driving part to rotate the drum, and control the air heater and the blower to supply heated air into the drum and characterized by: a first air inlet formed underneath the drum around the electrode part; a second air inlet formed in a rear side of the drum; an air inflow path arranged underneath the drum and through which air flows into the drum; a first air supply path having one end connectable to the air inflow path and another end connected to the first air inlet; a second air supply path having one end connectable to the air inflow path and another end connected to the second air inlet; and a flow path open/shut part (219, 239), wherein the flow path open/shut part (219, 239) is configured to: connect the first air supply path to the air inflow path when the power supplier is operating, and connect the second air supply path to the air inflow path when the power supplier is not operating, and wherein the air heater is installed in the second air supply path. a first air inlet formed underneath the drum around the electrode part; a second air inlet formed in a rear side of the drum; an air inflow path arranged underneath the drum and through which air flows into the drum; a first air supply path having one end connectable to the air inflow path and another end connected to the first air inlet; a second air supply path having one end connectable to the air inflow path and another end connected to the second air inlet; and a flow path open/shut part (219, 239), wherein the flow path open/shut part (219, 239) is configured to: connect the first air supply path to the air inflow path when the power supplier is operating, and connect the second air supply path to the air inflow path when the power supplier is not operating, and connect the first air supply path to the air inflow path when the power supplier is operating, and connect the second air supply path to the air inflow path when the power supplier is not operating, and wherein the air heater is installed in the second air supply path.