On the account of the unexpectedness, tremendous conflict and social influence of the unexpected event, it becomes the focus of the public concern and is of great news value once it occurs.

突发事件因为其突发性、不可预测性、巨大的矛盾冲突和社会影响力，一旦发生，就成为社会公众关注的焦点，具有较大的新闻价值。