Legal analysis: doctor's advice should not be altered. When cancellation is required, the word "cancellation" should be marked with red ink and signed. Under normal circumstances, doctors may not give oral orders. When oral medical advice is needed to rescue critically ill patients, nurses should repeat it. After the rescue, the doctor should fill the doctor's advice truthfully immediately.

Legal basis: Paragraph 1 of Article 28 of the Basic Specification for Medical Records Writing refers to the doctor's orders issued in medical activities. Medical orders are divided into long-term medical orders and temporary medical orders.