Patients scheduled for same-day surgery (SDS) often experience state anxiety, which may result in increased perceptions of pain and lower self-efficacy in healing. Complementary therapies (CT), such as relaxation technique, massage, guided imagery, and acupuncture have been shown to benefit patients undergoing surgery. The aim of this study was to examine the effects of audio relaxation technique (ART), music intervention (MI), nature video application with music (NVAM), and nature video application without music (NVA) delivered via mobile technologies on patients' state anxiety, pain perception, and perceived self-efficacy in healing.