根据ScrollView的文档，您必须至少禁用ScrollView的子size_hint之一：
<Controller>: layout_content: layout_content BoxLayout: id: bl orientation: 'vertical' padding: 10, 10 row_default_height: '48dp' row_force_default: True spacing: 10, 10 ScrollView: size: self.size GridLayout: id: layout_content size_hint_y: None cols: 1 row_default_height: '20dp' row_force_default: True spacing: 0, 0 padding: 0, 0 Label: text: "Lorem ipsum dolor sit amet"
并绑定布局的大小以适应自身：
# main.pyclass Controller(FloatLayout): layout_content=ObjectProperty(None) def __init__(self, **kwargs): super(Controller, self).__init__(**kwargs) self.layout_content.bind(minimum_height=self.layout_content.setter('height'))
