天壇大佛是依據佛經如來32相而設計，面相參照龍門石窟的盧舍那佛，而衣紋和頭飾則參照敦煌石窟第360窟的釋迦牟尼佛像，因此大佛兼備隋唐佛教全盛時期造像的特色。
坐向：坐南向北，稍稍偏東，朝向全香港。
坐姿：稱為「結跏趺」，又稱「全跏」、「正跏」。相傳是釋迦牟尼在菩提樹下修悟正道時的坐姿。
面相：面如滿月、額廣平正、雙耳垂肩，慈顔微笑，頂部肉髻螺，青蓮花眼、眉如初月，兩眉之間，有一白如雪，軟若棉的毫毛，向右旋轉。重5噸高4.3米的佛面，在澆注時加入約2千克黃金，更添光彩。
手印：右手示「施無畏印」，左手下垂腳上，反掌向外，指端微微向下，稱「予願印」，雙掌中心現法輪，代表佛法長存，流轉十方。高10cm
 
 
The statue is named Tian Tan Buddha because its base is a model of the Altar of Heaven or Earthly Mount of Tian Tan, the Temple of Heaven in Beijing. One of the five large Buddha statues in China, it is enthroned on a lotus on top of a three-platform altar.[2] Surrounding it are six smaller bronze statues known as "The Offering of the Six Devas" that are posed offering flowers, incense, lamp, ointment, fruit, and music to the Buddha. These symbolise the Six Perfections of generosity, morality, patience, zeal, meditation, and wisdom, all of which are necessary for enlightenment. H10cm