On the occasion of the 100th anniversary of the founding of the Communist International，the 21st annual International Meeting of Communist and Workers’ Parties was held in Izmir，Turkey. Compared with previous sessions，this year’s meeting has witnessed many new features and changes in the preliminary preparation，process，agenda and effect of the meeting. It can be said that the meeting is more fully prepared，the process is more complete，the agenda is more focused and the effect is more prominent. The meeting will play an important role in promoting the solidarity and cooperation of international communist movements and strengthening inter Marxist political parties’ exchanges and cooperation.