A convergence system for network conference, the convergence system for network conference being able to implement interconnection and interoperation between different conference software, comprising: a first client, a second client, and a cloud server; characterized in that, the first client is installed with a first conference application and a cloud conference application, the second client is installed with a second conference application and the cloud conference application, and the cloud server is installed with the first conference application and the second conference application; wherein the first conference application is different from the second conference application; wherein the first client is configured to create or enter a first virtual conference through the first conference application and send a first join request to the cloud server through the cloud conference application, and the cloud server is configured to join the first virtual conference through the first conference application according to the first join request; wherein the second client is configured to create or enter a second virtual conference through the second conference application and send a second join request to the cloud server through the cloud conference application, and the cloud server is further configured to join the second virtual conference through the second conference application according to the second join request; wherein the cloud server is further configured to receive a conference room creation request sent by the first client or the second client, create a virtual conference room according to the conference room creation request, and add the first virtual conference and the second virtual conference to the virtual conference room; and wherein the first client and the second client are further configured to transmit data through the virtual conference room. characterized in that, the first client is installed with a first conference application and a cloud conference application, the second client is installed with a second conference application and the cloud conference application, and the cloud server is installed with the first conference application and the second conference application; wherein the first conference application is different from the second conference application; wherein the first client is configured to create or enter a first virtual conference through the first conference application and send a first join request to the cloud server through the cloud conference application, and the cloud server is configured to join the first virtual conference through the first conference application according to the first join request; wherein the second client is configured to create or enter a second virtual conference through the second conference application and send a second join request to the cloud server through the cloud conference application, and the cloud server is further configured to join the second virtual conference through the second conference application according to the second join request; wherein the cloud server is further configured to receive a conference room creation request sent by the first client or the second client, create a virtual conference room according to the conference room creation request, and add the first virtual conference and the second virtual conference to the virtual conference room; and wherein the first client and the second client are further configured to transmit data through the virtual conference room.