The cost of targeted therapy for breast cancer is more than $7,000 per course of treatment. Targeted therapy is mainly for HER2 positive patients, HER2 positive patients are less effective in endocrine therapy or chemotherapy, so targeted therapy should be added, the commonly used drug is Herceptin, also known as trastuzumab, each course of treatment is about one, the cost is more than 7000 yuan, the whole course of treatment takes a year, so the overall cost is about 100,000 yuan. The overall cost is about 100,000 yuan. The price may fluctuate depending on the health insurance policy of each place or the manufacturer of the drug, but overall, the price of targeted therapy is relatively high.