Abstract: Provided are a method and a system for opening an account based on an eUICC. The method includes: receiving, by an eUICC remote management platform, an account opening request forwarded by an operator management platform and comprising a user number, an eUICC identification and information of a service to be opened; allocating an ICCID; sending to the operator management platform an authentication parameter allocation request including the ICCID and the user number and receiving authentication parameters comprising an IMSI and an authentication key serial number fed back by the operator management platform; generating a complete profile according to the authentication parameters and a pre-stored initial profile; sending account opening parameters to the operator management platform to enable the operator management platform to perform a generation processing of an account opening order; downloading a complete profile to the eUICC and activating the complete profile.