---
type: Knowledge Base
title: "Blood Type Personality Knowledge Base (血型性格知識庫)"
description: "An Open Knowledge Format reference for ABO blood-type personality, paired with sun signs and the Chinese zodiac. A cultural belief, for entertainment."
resource: https://localpapa.com/tools/horoscope.html
tags: [blood-type, personality, ketsueki-gata, okf]
timestamp: 2026-06-21T00:00:00Z
---

# Blood Type Personality Knowledge Base · 血型性格知識庫

In East Asia (especially Japan and Korea), a popular belief — **ketsueki-gata (血液型性格分類)** — links the four **ABO blood types** (A, B, O, AB) to personality. LocalPapa’s [sun-sign](../horoscope/index.md) and [Chinese-zodiac](../zodiac/index.md) tools let you add your blood type for a combined **sign × blood type** / **zodiac × blood type** reading.

> ※ Blood-type personality theory is a popular cultural belief with no scientific basis — for entertainment only. / ※ 血型性格說（血液型性格分類）為流行文化說法，並無科學根據，僅供參考娛樂。

This is the **static knowledge layer** in [Open Knowledge Format](https://cloud.google.com/blog/products/data-analytics/how-the-open-knowledge-format-can-improve-data-sharing/): stable, human- and agent-readable. The **dynamic layer** — combining your sign/zodiac with blood type — runs 100%% in the browser, with nothing uploaded.

## Navigate

- [The Four Blood Types](./types/index.md) — A · B · O · AB

## Pairs with

- [Western Astrology (sun signs)](../horoscope/index.md) — 星座 × 血型
- [Chinese Zodiac](../zodiac/index.md) — 生肖 × 血型

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*Part of the [LocalPapa knowledge pack](../index.md).*