Brain tumors, also known as brain tumors, are a relatively common condition in neurosurgery. Early stage of brain tumor may present symptoms such as headache, vomiting and vision loss. 1. Headache: Early stage of brain tumor may have the symptom of headache, and with the development of the disease, the degree of headache may become more and more obvious. 2. Vomiting: Vomiting in brain tumor is usually caused by the increase of intracranial pressure due to tumor, which can cause reflex vomiting due to the stimulation of vomiting center by the increase of intracranial pressure, and can also be caused by the direct or indirect stimulation of the posterior fossa of the cranium to compress the vomiting center or vagus nerve. 3. Vision loss: due to increased intracranial pressure or direct compression of the optic nerve by the tumor, it usually manifests as blurring of vision, diplopia, visual field defects, and so on. If the above symptoms or other discomforts occur, one should go to regular hospitals for relevant examination and diagnosis and treatment under doctor’s advice, so as to avoid delay in diagnosis and treatment.