白度母(White Tara)，藏音译卓玛嘎尔姆，又称为增寿救度佛母，是观世音菩萨的化身。观世音有32种应化身，仅其中的度母化身就可以变化为21位救度母，白度母即为圣救度佛母的二十一尊化身之一。在藏传密教中，绿度母与白度母是二十一尊度母之中流传最广的。而藏密又常以长寿佛、白度母及尊胜佛母等三尊合称为：“长寿三尊”。白度母具有救度八难的威德。白度母是能够为一切众生赐予长寿的一尊度母，许多信仰众所知道的白度母是一位赐予众生长寿的本尊，其实不止这些，如果虔诚地修持她的法门，也可以使智慧迅速增长。

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White Tara, (Tibetan: drol ma kar mo): the female Buddha of longevity. Tara is a completely enlightened buddha and as a young bodhisattva she promised always to appear in the form of a female bodhisattva and goddess for the benefit of all beings and especially to protect from the eight fears. In this white form she appears specifically for the purpose of bestowing longevity. Practiced in all Schools of Tibetan Buddhism Tara is second in popularity only to Avalokiteshvara. Her practices are found in all classes of tantra - Nyingma and Sarma.

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《白度母如意轮·无死甘露吉祥》本文来自郝文鑫先生（文殊金刚）的公众号：图像金刚乘教法史（或朋友圈）。