In 2020，on the 200th anniversary of Engels’ birth，the Communist Parties and the left wing all over the world held a variety of activities to commemorate Engels，review Engels’ great contribution to the international communist movement. They have affirmed Engels’ care and guidance of Marxist political parties’ in various countries The establishment and development of socialist political parties greatly promoted the growth of the international communist movement. The systemic crisis，the polarization between the rich and the poor，and the crisis of social identity in contemporary capitalism have caused chaos and turmoil，and the whole world is facing an increasing number of risks and challenges. Engels’ thought has great guiding significance beyond the times.