Construction machine

A construction machine provided with an attachment having a leading end attachment, the construction machine comprising:

• an attachment state detecting device which detects a state of the attachment;
• an attachment positional information generation section which generates attachment positional information concerning a position of the attachment based on the state of the attachment detected by the attachment state detecting device;
• a display device;
• and
• a display control section which controls the display device to display attachment relevant information generated based on the attachment positional information generated by the attachment positional information generation section and three-dimensional contour information concerning a three-dimensional contour of a peripheral working area around the construction machine, wherein
• the attachment relevant information is information concerning an image obtained by superimposing a peripheral image about the three-dimensional contour of the peripheral working area and a projected image about the leading end attachment which is projected to the peripheral image in a projection direction set arbitrarily or a projection direction set in accordance with a predetermined condition.