Targeting at the situation that some manufacturers ignore the portable function and design the handles coarsely, suggestions of scientific handle design were proposed in this paper, and the mechanic property of separated handle structure of paper package was also studies. The experiment on handle structures of different sizes was carried out taking separated handles of paper bags and plastic handles as the research subjects. The parameter a (the distance between the 2 holes) and c (the distance between the hole and the top edge of the bag) of the lift rope of the handbag as well as the plastic sheet of the handle of series A and series B were adjusted to determine the size relationship in handle design. The results showed that the tearing force of the lift rope of the handbag rope at the hole increased with the increase of c value, but the extent of increase tended to slow down. Influenced by a value, the tearing force first increased in a certain range and then decreased. The paper materials used and the material quantitation also affected the tearing force. The width of plastic handle can improve ergonomic comfort degree and played a role in improving bearing. In practical application, the hole size of the handle sheet had a major impact on the handle strength. In handle design of handbags, both ergonomic properties and load-bearing properties should be considered.