|This paper presents the nursing experience for a 53-year-old female patient who had locally advanced breast cancer complication of malignant fungating wounds associated with delayed medical treatment. The duration of nursing care for the patient was January 15 to 21, 2018. Through interview, observation, and listening, collection and compilation of the related information were carried out according to the physical, psychological, social and spiritual aspects of the patient. Then the paper determined the health concerns of this patient, including impaired skin integrity, decisional conflict and anxiety. In the nursing process, the concept of ＂TIME＂ was employed to evaluate the nursing strategy for the malignant fungating wounds. The researcher taught and demonstrated self-care of the wound in order to effectively control the bleeding and ulcerating symptoms of the wound. However, the patient faced a decision-making dilemma after having a bad experience with side effects from a past chemotherapy, which deepened her fear of chemotherapy. Through establishment of a good sense of trust with the patient, provision of a channel for emotional catharsis, and strengthening of self-confidence in therapy after encouragements from other patients having the same symptoms, the medical team invited the patient and her family to participate in selecting the therapy plans. With the use of shared decision-making procedures, the patient was assisted in selecting neoadjuvant target chemotherapy as the most suitable treatment method. As a result, the patient had a positive attitude towards continuing the therapy and her quality of life was thus improved. Currently, incorporating the concept of shared decision-making into patient treatment decision process is still at its initial stage. When a cancer patient faces the risk of uncertainty from therapy, it is likely for the medical dispute to arise. Therefore, this paper suggests that this concept should be further promoted in the clinical education to materialize the patient-centered caring concept so that more breast cancer patients receiving therapy could be benefited in the future.