应当用信件的方式写:Proof of Income[单位名称][单位地址][单位联系电话][对方单位名称](如果是“大使馆”应当写 Embassy of Spain in Beijing,如果是“领事馆”应当写 Consulate of Spain in ... 不知道你指的是哪个城市,上海?广州?)[对方单位地址]To whom it may concern,This is a proof of income for ###, [性别], born [出生日期]. This person has been working as security officer in the Department of Services, [单位名称], starting from December 1, 2000. His/her annual income is ###.Sincerely yours,### [证明人签名][证明人名字,用拼音拼写][证明人在单位中的职位], [单位名称][证明人工作电话](如有邮箱,也应写上)