Provided is a surface contamination monitor that includes a hand and foot contamination monitor that can be relocated to an inspection site in a simple manner. A surface contamination monitor has a folding mechanism that allows folding a monitor main body, and comprises a base whose top face is provided with radiation detection elements for measurement of a foot portion, a support column provided at a center of a far side of the top face of the base, and an upper unit, which is fixed to a top end portion of the support column, and on which there are provided radiation detection elements for measurement of a hand portion. The folding mechanism allows the support column to bend towards the top face of the base by way of a first hinge and to bend towards an opposite side by way of a second hinge.