This research is a randomized controlled double-blind experimental study aiming to evaluate the effect of tele-nursing practices based on technological competence theory on empowerment status and symptom management self-efficacy in breast cancer patients. The research will be carried out between September 2023 and March 2024 with patients diagnosed with breast cancer, who are receiving chemotherapy on an active basis, registered in the Medical Oncology Polyclinic of Atatürk University Health Research and Application Center. The sample of the study will consist of 70 people, 35 of which are in the experimental group and 35 in the control group. Afterwards, approximately 11 weeks of tele-nursing practices, including training, counseling and tele-monitoring based on the theory of technological competence, will be given to the experimental group. While preparing the content of tele-nursing practices, national and international literature will be scanned. In line with the literature; Training, consultancy and follow-up will be provided on breast cancer, problems experienced in the treatment process of breast cancer, the most frequently experienced chemotherapy symptoms and management strategies. Before starting the training program, a training booklet will be distributed to the patients and shared as an e-booklet. Within the scope of the training program, a five-week training will be held once a week via Google Meet. After the training program is completed, the counseling and telemonitoring process will begin. In this process, a previously prepared consultancy guide will be used. Counseling and telemonitoring will cover 2 chemotherapy cycles (approximately 6 weeks). Within the scope of the application, the entire experimental group will be individually phoned on the 7th day after receiving a chemotherapy course. Information about the individual conditions of the patients and the instant status changes regarding the symptoms will be obtained and their questions will be answered in line with the previously created counseling guide. Patients will be informed that at any time other than the specified days, the questions of the patients regarding the instantaneous situation changes will be answered. After the completion of the tele-nursing practices, post-test measurements will be made with the Cancer Empowerment Scale and the Chemotherapy Symptom Management in Breast Cancer-Self-efficacy Scale of the experimental and control groups, and the feedback of the patients in the experimental group regarding the implementation process will be received. No attempt will be made to the individuals in the control group during the research process. Keywords: Tele-nursing, Technological Competence Theory, Breast Cancer, Cancer Empowerment, Symptom Management