The present invention relates to an apparatus and method for providing a virtual treatment experience which can make a user to understand the necessity for treatment and learn how to counteract side effects of the treatment. The apparatus may include a patient information manager configured to acquire medical information including disease name and blood value of a patient and treatment information including treatment program information and prescription information, a virtual activity provider configured to proceed with a virtual activity according to a manipulation command from a user terminal of the patient and provide an additive score and a subtractive score according to a result of proceeding with the virtual activity, and a controller configured to calculate health value information by quantifying a current health condition of the patient based on the blood value of the patient, select a first display image of an avatar corresponding to the calculated health value information, recalculate the heath value information of the patient using health value information set according to the number of days for which the treatment program has been applied and the provided additive score and subtractive score, and change the first display image of the avatar to a second display image according to the recalculated health value information of the patient.