The invention discloses an account interaction method and an account interaction device. The method comprises steps: an account creation request for creating a first account on a first platform is acquired; in response to the account creation request, the first account is created on the first platform; a first correlation relationship is created between the first account and a second account on the first platform, wherein the first correlation relationship is used for indicating the first account to be a sub account of the second account, and the second account and a third account on a second platform have a second correlation relationship; and interaction between the first account and the third account on the second platform is carried out through the second account. The technical problem of high interaction complexity in the existing account interaction method can be solved.