The 1970 County Championship was the 71st officially organised running of the County Championship.^[1] Kent won the Championship title.^[2]

• 10 points for a win
• 5 points to each side for a tie
• 5 points to side still batting in a match in which scores finish level
• Bonus points awarded in first 85 overs of first innings
• Batting: 1 point for each 25 runs above 150
• Bowling: 2 point for every 2 wickets taken
• No bonus points awarded in a match starting with less than 8 hours' play remaining.
• Position determined by points gained. If equal, then decided on most wins.
• Each team plays 24 matches.