Go to File in the top menu and select "New." A new window will pop up where you can assign the properties of your new Photoshop document. A menu will pop up and under the section which says "Background Contents", where you should choose "Transparent". The button appears at the very bottom of the new document pop-up window. Press the OK button. Look at the Layer Window or the Layers tab in your document properties bar (it should already be open by default). The background layer should look like a checkered gray and white box (indicating that it is transparent).

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Write a summary of the previous text in Chinese:
点击“文件”→“新建”。 选择“透明”。 点击“确定”。 查看图层。