A non-destructive inspection method for aluminum pouch sealing using ultrasonic waves, the non-destructive inspection method comprising: transmitting ultrasonic signals by a transmission probe to a sealed portion of the aluminum pouch; receiving the ultrasonic signals transmitted from the transmission probe by a receiving probe; inspecting whether a sealing defect is present in the sealed portion of the aluminum pouch on the basis of the ultrasonic signals; and displaying a result of the inspecting on a monitor of the display, wherein: the sealing defect is detected by inspecting a presence of a bubble and a sealing width: the presence of the bubble is detected by: displaying color on the monitor by which the sealed portion with a high density at a transmitting portion with a high transmittance is displayed in red and the sealed portion with a low density at a transmitting portion with a low transmittance having the bubble is displayed in blue; and the defect of the sealing width is detected by: setting 20 sections at the sealed portion of the aluminum pouch, measuring dimension having a value equal to or larger than a specific output value from among the measured sections, determining the measured dimensions as widths of sealing, comparing each of the widths to a reference specification, and determining as a "no-good" portion when the width is inferior to the reference specification; and wherein a frequency of each of the transmission probe and the receiving probe is 715 kHz or 800 kHz. transmitting ultrasonic signals by a transmission probe to a sealed portion of the aluminum pouch; receiving the ultrasonic signals transmitted from the transmission probe by a receiving probe; inspecting whether a sealing defect is present in the sealed portion of the aluminum pouch on the basis of the ultrasonic signals; and displaying a result of the inspecting on a monitor of the display, wherein: the sealing defect is detected by inspecting a presence of a bubble and a sealing width: the presence of the bubble is detected by: displaying color on the monitor by which the sealed portion with a high density at a transmitting portion with a high transmittance is displayed in red and the sealed portion with a low density at a transmitting portion with a low transmittance having the bubble is displayed in blue; and the defect of the sealing width is detected by: setting 20 sections at the sealed portion of the aluminum pouch, measuring dimension having a value equal to or larger than a specific output value from among the measured sections, determining the measured dimensions as widths of sealing, comparing each of the widths to a reference specification, and determining as a "no-good" portion when the width is inferior to the reference specification; and wherein a frequency of each of the transmission probe and the receiving probe is 715 kHz or 800 kHz. the presence of the bubble is detected by: displaying color on the monitor by which the sealed portion with a high density at a transmitting portion with a high transmittance is displayed in red and the sealed portion with a low density at a transmitting portion with a low transmittance having the bubble is displayed in blue; and the defect of the sealing width is detected by: setting 20 sections at the sealed portion of the aluminum pouch, measuring dimension having a value equal to or larger than a specific output value from among the measured sections, determining the measured dimensions as widths of sealing, comparing each of the widths to a reference specification, and determining as a "no-good" portion when the width is inferior to the reference specification; and wherein a frequency of each of the transmission probe and the receiving probe is 715 kHz or 800 kHz. setting 20 sections at the sealed portion of the aluminum pouch, measuring dimension having a value equal to or larger than a specific output value from among the measured sections, determining the measured dimensions as widths of sealing, comparing each of the widths to a reference specification, and determining as a "no-good" portion when the width is inferior to the reference specification; and wherein a frequency of each of the transmission probe and the receiving probe is 715 kHz or 800 kHz.