The invention relates to a medical hand-held measuring device for measuring the pH value and/or the temperature of wounds, including a housing (2) having at least one display (6) for displaying the particular measured value, operating elements, and a probe (10) provided at an end of the housing, the probe having a probe arrangement (9) for producing electrical measurement signals that correspond to the pH value to be measured and/or the temperature to be measured . The probe (3) is electrically and mechanically connected to the housing (2) in a removable manner by means of a probe-sided coupling section (10) and a housing-sided coupling section (11).