The 1978 Schweppes County Championship was the 79th officially organised running of the County Championship.^[1] Kent won the Championship title. Sussex and Glamorgan were both deducted six points after a breach of regulations.^[2] The Championship was sponsored by Schweppes for the first time.

Table

• 12 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 100 overs of first innings
  • Batting: 150 runs - 1 point, 200 runs - 2 points 250 runs - 3 points, 300 runs - 4 points
  • Bowling: 3-4 wickets - 1 point, 5-6 wickets - 2 points 7-8 wickets - 3 points, 9-10 wickets - 4 points
• No bonus points awarded in a match starting with less than 8 hours' play remaining.
• The two first innings limited to a total of 200 overs. The side batting first limited to 100 overs. Any overs up to 100 not used by the side batting first could be added to the overs of the side batting second.
• Position determined by points gained. If equal, then decided on most wins.
• Each team plays 22 matches.