Ishikawa Diagram

Ishikawa Diagram

What is it?

An Ishikawa Diagram, also known as a Fishbone Diagram or Cause-and-Effect Diagram, is a visual tool used to identify, analyze, and display potential causes of a specific problem or issue. It organizes potential causes into categories, typically represented as "bones" branching off a central "spine" that represents the problem. The diagram helps teams brainstorm, explore, and understand the root causes of a problem, facilitating problem-solving and continuous improvement processes.

How can it be useful to you? When you're faced with a problem and need to identify its root cause.

Ishikawa DiagramEvocon

Consider a situation where your internet connection is not working properly. An Ishikawa Diagram helps you dissect the problem into smaller components, making it easier to understand the underlying reasons. The diagram resembles a fish skeleton, with the "spine" representing the problem (unstable internet connection), and the "bones" branching off the spine, depicting various categories of potential causes.

Categories might include:

  • Hardware
  • Software
  • Network
  • Service provider

Under each category, you would list specific potential causes:


  • Router malfunction
  • Outdated equipment


  • Incorrect settings
  • Outdated firmware


  • Network congestion
  • Poor signal strength

Service provider:

  • Scheduled maintenance
  • Infrastructure issues

By visually arranging the potential causes, the Ishikawa Diagram facilitates a systematic and comprehensive approach to brainstorming, analyzing, and identi ...