Marriage Line, is the area used to assess the quality of a marriage partner or predict happiness after marriage. 　　

Here, "marriage" does not refer solely to formal marriage, but also includes relationships such as dating—essentially all romantic connections between men and women.

A clear, horizontally extending marriage line indicates one will find an ideal partner and enjoy a happy, harmonious marital life. Particularly, if this line appears on both hands, it suggests great fortune awaits.

A vague marriage line appearing on the Mercury Mount signifies poor marital luck—difficulties in finding an ideal partner and unstable romantic relationships, hinting at loneliness in later life despite marriage.

Two marriage lines indicate warmth in love, yet even if formally married, separation or divorce may still occur, possibly leading to remarriage.

When two marriage lines are very close together but differ in length, it suggests issues arising from a love triangle. If the upper line is longer, it implies pre-marital involvement with another member of the opposite sex. Conversely, if the upper line is shorter, it suggests infidelity after marriage.

Three marriage lines indicate complex emotions, weak moral restraint regarding fidelity, and a tendency toward flirtation and emotional promiscuity. However, strong wisdom can help avoid conflicts.

An excessive number of marriage lines (four or more) suggests a person enjoys physical pleasures over emotional or spiritual fulfillment. Being prone to sensual desires, such individuals often struggle to maintain a healthy family life.

A marriage line that curves upward at its end indicates difficulty in marrying, suggesting a tendency toward lifelong singleness. For women, even if married, they may still face separation and must forge their own path independently.

A marriage line ending near the base of the little finger indicates excellent marriage prospects. For women, this suggests the potential to marry an ideal partner.
If the marriage line dips downward and touches the Heart Line, it warns of death occurring to a fiancé, partner, or spouse—or that the relationship may become unfulfilled due to other circumstances.

When the end of the marriage line descends toward the center of the palm, it indicates the marriage may break down due to emotional coldness, or suggest a life of an unfulfilled marriage.

A marriage line rising upward beneath the middle finger reflects particular sensitivity toward love matters; constant pessimism and suspicion may easily create cracks in marital harmony.

If the marriage line rises upward and intersects the Success Line, it implies marriage to a successful individual with fame, status, and wealth—and through marriage, one’s social standing may be elevated.

A marriage line with a gap or break indicates a generally happy and fulfilling marriage, though it may be disrupted by complications in the romantic relationship.

A marriage line with an upward diagonal streak suggests loyalty in love, mutual understanding, and a stable marriage life supported by financial security.

When a second marriage line emerges from the middle of the primary marriage line, it indicates a temporary disruption in marriage—but eventual reconciliation and reunion are possible.