Legal basis: Paragraph 2 of Article 7 of the Interim Measures for the Registration of Household Registration in Kunshan City, the public security organ accepts the following persons whose household registration has been in this city for more than 3 years and the area is more than 80 square meters: they have been legally employed in this city for more than 5 years (the labor contract is signed by the labor security department); Those who have participated in social security and medical insurance for more than 3 years are allowed to move in with their spouses and their last adult children.