淘宝里无法一次性删除全部订单，只能选择一个个的删除，具体删除步骤如下：
一、登录淘宝网，点击已买到的宝贝。
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二、点击所有订单，再点击删除单条订单右上角的垃圾筒。
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三、跳出来的提示当中，点确认。
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四、删除的订单会出现在“订单回收站”中，点进去。
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五、继续选择右上角的订单，选择永久删除即可。
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注意：淘宝还没有批量删除订单的功能，所以如果有第三方表示可以代删，就一定是骗子，谨防上当。