Halloween originated as a celebration connected with evil spirits. Witches flying on broomsticks with ghosts, goblins and skeletons have all evolved as symbols of Halloween. Bats, owls and other nocturnal animals are also popular symbols of Halloween. They were originally feared because people believed that these creatures could communicate with the spirits of the dead.
Black cats are also symbols of Halloween and have religious origins as well. Black cats were considered to be reincarnated beings with the ability to divine the future. During the Middle Ages it was believed that witches could turn themselves into black cats. Thus when such a cat was seen, it was considered to be a witch in disguise. All these are popular trick-or-treat costumes and decorations for greeting cards and windows.
Black is one of the traditional Halloween colors, probably because Halloween festivals and traditions took place at night.
Pumpkins are also a symbol of Halloween. The pumpkin is an orange-colored squash, and orange has become the other traditional Halloween color. Carving pumpkins into jack- o'-lanterns is a Halloween custom also dating back to Ireland. A legend grew up about a man named Jack who was so stingy that he was not allowed into heaven when he died, because he was a miser. He couldn't enter hell either because he had played jokes on the devil. As a result, Jack had to walk on the earth with his lantern until Judgement Day. So Jack and his lantern became the symbol of a lost or damned soul. To scare these souls away on Halloween, the Irish people carved scary faces out of turnips, beets or potatoes representing "Jack of the Lantern", or Jack-o-lantern. When the Irish brought their customs to the United States, they carved faces on pumpkins because in the autumn they were more plentiful than turnips. Today jack-o-lanterns in the windows of a house on Halloween night let costumed children know that there are goodies waiting if they knock and say "Trick or Treat!"
萬聖節前夜起源於與邪惡幽靈相關的慶祝活動，所以騎着掃帚的女巫、幽靈、小妖精和骷髏都是萬聖節的標誌物。蝙蝠、貓頭鷹和其他夜間活動的動物也是萬聖節的普遍標誌。起初，這些動物讓人覺得非常可怕，因爲人們認爲這些動物能和死者的幽靈進行交流。
黑貓也是萬聖節的標誌物，並且也有一定的宗教起源。人們認爲黑貓可以轉生，具有預言未來的超能力。在中世紀，人們認爲女巫可以變成黑貓，所以人們一看到黑貓就會認爲它是女巫假扮的。這些標誌物都是萬聖節服裝的普遍選擇，也是賀卡或櫥窗上很常用的裝飾。
黑色是傳統的`萬聖節顏色，這可能是因爲萬聖節前夜的各種傳統或儀式都是在晚上舉行。
南瓜也是萬聖節的標誌性象徵。南瓜是橘黃色的，所以橘黃色也成了傳統的萬聖節顏色。用南瓜雕制南瓜燈也是一個萬聖節傳統，其歷史也可追溯到愛爾蘭。傳說有一個名叫傑克的人非常吝嗇，因而死後不能進入天堂，而且因爲他取笑魔鬼也不能進入地獄，所以，他只能提着燈籠四處遊蕩，直到審判日那天。於是，傑克和南瓜燈便成了被詛咒的遊魂的象徵。人們爲了在萬聖節前夜嚇走這些遊魂，便用蕪菁、甜菜或馬鈴薯雕刻成可怕的面孔來代表提着燈籠的傑克，這就是南瓜燈(Jack-o'-lantern)的由來。愛爾蘭人遷到美國後，便開始用南瓜來進行雕刻，因爲在美國秋天的時候南瓜比蕪菁更充足。現在，如果在萬聖節的晚上人們在窗戶上掛上南瓜燈就表明那些穿着萬聖節服裝的人可以來敲門搗鬼要糖果。
