1. A social media issue processing device, comprising: a question analyzing unit which analyzes a question type related with a question input based on a question pattern dictionary which is stored in advance; a social media analyzing unit which performs issue period recognition for the question, question type based analysis, question based summary creation, and question based reliability calculation; and a report creating unit which creates a summary in accordance with at least one of correlation between the question type and the question based summary, correlation between the issue period and a question type based analysis result, and correlation between the reliability and the question based summary.