You need to override sales_order_view in your theme or in your module.
vendor/magento/module-sales/view/adminhtml/layout/sales_order_view.xml
<block class="Magento\Sales\Block\Adminhtml\Order\View\Items" name="order_items" template="Magento_Sales::order/view/items.phtml">
<arguments>
<argument name="columns" xsi:type="array">
<item name="product" xsi:type="string" translate="true">Product</item>
<item name="status" xsi:type="string" translate="true">Item Status</item>
<item name="price-original" xsi:type="string" translate="true">Original Price</item>
<item name="price" xsi:type="string" translate="true">Price</item>
<item name="ordered-qty" xsi:type="string" translate="true">Qty</item>
<item name="subtotal" xsi:type="string" translate="true">Subtotal</item>
<item name="tax-amount" xsi:type="string" translate="true">Tax Amount</item>
<item name="tax-percent" xsi:type="string" translate="true">Tax Percent</item>
<item name="discont" xsi:type="string" translate="true">Discount Amount</item>
<item name="total" xsi:type="string" translate="true">Row Total</item>
</argument>
</arguments>
<block class="Magento\Sales\Block\Adminhtml\Order\View\Items\Renderer\DefaultRenderer" as="default" name="default_order_items_renderer" template="Magento_Sales::order/view/items/renderer/default.phtml">
<arguments>
<argument name="columns" xsi:type="array">
<item name="product" xsi:type="string" translate="false">col-product</item>
<item name="status" xsi:type="string" translate="false">col-status</item>
<item name="price-original" xsi:type="string" translate="false">col-price-original</item>
<item name="price" xsi:type="string" translate="false">col-price</item>
<item name="qty" xsi:type="string" translate="false">col-ordered-qty</item>
<item name="subtotal" xsi:type="string" translate="false">col-subtotal</item>
<item name="tax-amount" xsi:type="string" translate="false">col-tax-amount</item>
<item name="tax-percent" xsi:type="string" translate="false">col-tax-percent</item>
<item name="discont" xsi:type="string" translate="false">col-discont</item>
<item name="total" xsi:type="string" translate="false">col-total</item>
</argument>
</arguments>
</block>
<block class="Magento\Sales\Block\Adminhtml\Items\Column\Qty" name="column_qty" template="Magento_Sales::items/column/qty.phtml" group="column"/>
<block class="Magento\Sales\Block\Adminhtml\Items\Column\Name" name="column_name" template="Magento_Sales::items/column/name.phtml" group="column"/>
<block class="Magento\Framework\View\Element\Text\ListText" name="order_item_extra_info"/>
After override you can add, edit or delete column as per your requirement.
Still you have any query let me know.