西洋占星術 · 蟹座
Cancer — The Crab
June 21 – July 22
Cancer — The Crab is the cardinal water sign of the zodiac, ruled by Moon and covering birthdays from June 21 – July 22. Cancer carries the emotional memory of the zodiac. Protective, nurturing, deeply attached to home and lineage. People born under Cancer are typically nurturing, intuitive and loyal.
Strengths
Cancer personality in depth
Cancer, the water sign born June 21 – July 22, is at core nurturing, intuitive, loyal, protective and empathic. Cancer carries the emotional memory of the zodiac. Protective, nurturing, deeply attached to home and lineage. That water shows in a deep emotional current — reading the room before it speaks and remembering how it felt. These strengths rarely act alone: the nurturing and intuitive streak makes the first impression, while being loyal, protective and empathic shapes how that energy matures over a lifetime. To understand Cancer is to read all of these traits together rather than reduce the sign to a single word.
Challenges
The shadow side of Cancer
Every Cancer carries a shadow side, and for this sign it shows up as being moody, clingy, defensive and indirect. Under pressure the water floods, and feeling turns into moodiness, self-protection or absorbing what isn't theirs to carry. These are not separate flaws so much as strengths overplayed: the same nurturing nature that makes Cancer magnetic can curdle into being moody when it runs unchecked. Cancer grows by catching the early signs — moody and clingy — and choosing a different response before the pattern sets. Named honestly and worked with rather than denied, the shadow of Cancer becomes the exact edge where the sign does its deepest maturing.
Cancer in love
In love, Cancer loves from the depths: bonding slowly, then completely, once the emotional safety is genuinely there. At their best they bring nurturing, intuitive and loyal to a partnership, and they bond most easily with someone who can meet that. By sun-sign element, Cancer's most natural matches are Pisces, Scorpio and Capricorn — signs that either share Cancer's water instinct or complement it without dimming it. Chemistry is written across the whole birth chart far more than the sun sign alone, so Cancer can thrive with almost anyone who respects how the sign loves. The relationship works best when a partner takes Cancer's moody tendency in stride rather than as a verdict.
Cancer at work and with money
At work, Cancer leads by starting things: happiest launching a project, setting the direction and handing off the upkeep. The strengths that carry Cancer professionally are being nurturing, intuitive and loyal, and the roles that fit best give those room to breathe. With money, Cancer follows its ruler: the Moon makes it an emotional saver, hoarding for security yet soothing low moods with a purchase. The financial risk traces straight back to the sign's moody streak, so a simple, boring plan does more good than any clever move. Handled with a little self-awareness, Cancer's working style and money instinct point the same way — toward the larger life the sign is quietly building.
Cancer: element, modality and ruler
Cancer is the water cardinal sign, ruled by the Moon — a combination that belongs to this one sign alone. Being water sets the raw material: water is emotion, intuition and the will to merge. Being cardinal sets the timing: cardinal signs open the season and start the action. And the Moon as ruler adds the charge: the Moon, the tides of feeling, memory and care. Put together, this is why Cancer behaves so differently from the other two water signs — same element, but a different modality and ruler tune it toward being nurturing and intuitive.
Frequently asked questions
What dates is Cancer?
Cancer covers birthdays from June 21 – July 22. It is a Cardinal Water sign ruled by Moon.
What are Cancer's traits?
Cancer is typically nurturing, intuitive, loyal, protective and empathic. As a Cardinal Water sign, cancer carries the emotional memory of the zodiac. Protective, nurturing, deeply attached to home and lineage.
What are the weaknesses of Cancer?
Cancer can struggle with being moody, clingy, defensive and indirect. Awareness of these tendencies is how a Cancer keeps its water-sign strengths in balance.
Who is Cancer most compatible with?
Cancer is most naturally compatible with Pisces, Scorpio and Capricorn. These matches share or complement Cancer's water element, though real compatibility depends on the whole birth chart rather than the sun sign alone.
What planet rules Cancer and what does it mean?
Cancer is ruled by Moon. As its ruler, the Moon shapes the sign's core drive: the Moon, the tides of feeling, memory and care. It is part of why Cancer expresses its water nature the particular way it does.
What element is Cancer?
Cancer is a Water sign — Water Cardinal, ruled by Moon. In astrology that means water is emotion, intuition and the will to merge.