1、defaultExpandAllRows:true defaultExpandAllRows设为true就可以了
<ProTable
rowKey="key"
columns={rightBomColumnArr}
dataSource={rightBomTableTreeData}
search={false}
pagination={false}
recordCreatorProps={false}
toolbar={false}
options={false}
scroll={{ x: '100%', y: 400 }}
expandable={{
defaultExpandAllRows:true
}}>
</ProTable>
标签：树结构,React,defaultExpandAllRows,ProTable,Antd,true From： https://www.cnblogs.com/wwssgg/p/18075056