A pouch-type secondary battery, comprising: an electrode assembly comprising a main body and an electrode tab electrically connected with the main body ; a packaging film receiving and sealing the electrode assembly , and comprising: a first receiving portion corresponding to the main body of the electrode assembly and positioned outside the electrode assembly in a height direction (H); a second receiving portion extending obliquely along the height direction (H) of the electrode assembly from one end of the first receiving portion close to the electrode tab of the electrode assembly in a longitudinal direction (L) toward the electrode tab ; and a third receiving portion extending along the longitudinal direction (L) of the electrode assembly from one end of the second receiving portion close to the electrode tab of the electrode assembly in the longitudinal direction (L), and the third receiving portion being parallel to the first receiving portion , a portion of the electrode tab extending out of the third receiving portion ; wherein a joint location between the second receiving portion and the first receiving portion and a joint location between the second receiving portion and the third receiving portion in the packaging film each are formed with a bending angle (θ); characterized in that a packaging film includes a metal layer, the metal layer is greater than the electrode tab in hardness; the bending angles (θ) are equal in value and the bending angles (θ) each range from 130° to 160°. an electrode assembly comprising a main body and an electrode tab electrically connected with the main body ; a packaging film receiving and sealing the electrode assembly , and comprising: a first receiving portion corresponding to the main body of the electrode assembly and positioned outside the electrode assembly in a height direction (H); a second receiving portion extending obliquely along the height direction (H) of the electrode assembly from one end of the first receiving portion close to the electrode tab of the electrode assembly in a longitudinal direction (L) toward the electrode tab ; and a third receiving portion extending along the longitudinal direction (L) of the electrode assembly from one end of the second receiving portion close to the electrode tab of the electrode assembly in the longitudinal direction (L), and the third receiving portion being parallel to the first receiving portion , a a first receiving portion corresponding to the main body of the electrode assembly and positioned outside the electrode assembly in a height direction (H); a second receiving portion extending obliquely along the height direction (H) of the electrode assembly from one end of the first receiving portion close to the electrode tab of the electrode assembly in a longitudinal direction (L) toward the electrode tab ; and a third receiving portion extending along the longitudinal direction (L) of the electrode assembly from one end of the second receiving portion close to the electrode tab of the electrode assembly in the longitudinal direction (L), and the third receiving portion being parallel to the first receiving portion , a portion of the electrode tab extending out of the third receiving portion ; wherein a joint location between the second receiving portion and the first receiving portion and a joint location between the second receiving portion and the third receiving portion in the packaging film each are formed with a bending angle (θ); characterized in that a packaging film includes a metal layer, the metal layer is greater than the electrode tab in hardness; the bending angles (θ) are equal in value and the bending angles (θ) each range from 130° to 160°. <EOS>