Banjarmasin city government utilized the advances in internet technology through Instagram social media in order to establish external relationships with the society, the efforts of Banjarmasin city government to make Instagram social media official account in the protocol and communication of Banjarmasin city government as a medium for the information disclosure. In terms of managing feedbacks from the society to the Instagram social media uploads, City Government is considered less professional therefore causing a not so good impression for the society. Moreover, the uploads on the Banjarmasin City Government social media seems less neat and orderly for a class of official city government agency accounts. The research used is descriptive research with qualitative approach. The results showed that the Cyber Public Relations management in the public information disclosure in the Instagram social media account in the protocol and communication division of Banjarmasin City Government has been considered effective with the public assessment of the government official Instagram the dominant gives a good rating, structurally the Banjarmasin City Government Instagram already has sub division that is accounted to maintain the information. In the management of the Banjarmasin City Government Instagram social media account, in terms of appearance design is considered less attractive and the features in the Instagram also have not been fully utilized to give more actual information so the society can access Instagram to get information only depend on the main post. Recommend to the the Banjarmasin City Government Instagram has competent human resource in terms of the visual design and visual audio in order to produce the information publication which is interesting to see.