Disclosed are a radon measuring apparatus and method. A radon measuring apparatus according to the present invention can comprise: a housing having two separate spaces and through holes formed such that each space communicates with the outside; a probe unit having first and second probe rods which are respectively disposed inside each space in the opposite direction from each other inside the housing; a control unit disposed inside the housing and connected to the probe unit; and a switching unit for controlling the electrical connection between the first and second probe rods.