The host of library public lecture is the soul of the forum. The quality of the host determines the level and quality of the forum. It is the insufficient recognition of the importance of the host that caused the lack of appropriate understanding of the host of the lecture. The cultural feelings brought by the new media and the improvement of people's aesthetic ability have put forward higher requirements for the forum host. The host of Library Public Lecture  can only adapt to the growing cultural needs of the audience and readers if they have the spirit of dedication, broad cultural literacy, understanding, adaptability, communication skills, organizational planning ability and reading promotion ability. In addition to their own experience, the improvement of comprehensive quality depends on financial support, regulatory guarantees, strengthening supervision system and improving the evaluation criteria for evaluation, and also on innovative training channels and seeking support for social resources.