Disclosed are a host apparatus connected to an image forming apparatus and an information displaying method thereof. An information displaying method of a host apparatus which receives a data of at least one image forming apparatus including: receiving a data of the image forming apparatus; displaying a User Interface (UI) screen including a data area displaying the data by item and a graphic area displaying a graph of the data in the data area; adding a data of an item in the data area to the graphic area; determining whether the data of the item added is graphicalizable; and graphicalizing and displaying the data of the item added in the graphic area according to the determination result. With this, the host apparatus provides a user with convenience in facilitating graph reprocessing and data expansion as the user needs with regard to a web solution or an application to control information of the image forming apparatus.