The 2018 WCBA Playoffs was the postseason tournament of the 2017–18 season. It began on January 24, 2018.
| First round 24 January–3 February | Semifinals | Finals | ||||||||||||
| 1 | Beijing Great Wall | 3 | ||||||||||||
| 8 | Zhejiang Chouzhou Bank Golden Bulls | 1 | ||||||||||||
| 1 | Beijing Great Wall | 3 | ||||||||||||
| 4 | Shanghai Swordfish | 0 | ||||||||||||
| 4 | Shanghai Swordfish | 3 | ||||||||||||
| 5 | Jiangsu Phoenix | 0 | ||||||||||||
| 1 | Beijing Great Wall | 3 | ||||||||||||
| 3 | Shanxi Flame | 0 | ||||||||||||
| 2 | Xinjiang Magic Deer | 1 | ||||||||||||
| 7 | Guangdong Dolphins | 3 | ||||||||||||
| 7 | Guangdong Dolphins | 0 | ||||||||||||
| 3 | Shanxi Flame | 3 | ||||||||||||
| 3 | Shanxi Flame | 3 | ||||||||||||
| 6 | Heilongjiang Dragons | 0 | ||||||||||||
The numbers to the left of each team indicate the team's seeding, and the numbers to the right indicate the number of games the team won in that round.
January 24 19:30 |
| Zhejiang Chouzhou Bank Golden Bulls | 88–80 | Beijing Great Wall |
| Scoring by quarter: 19–23, 21–17, 34–18, 14–22 | ||
| Zhejiang leads series, 1–0 | ||
January 27 19:30 |
| Beijing Great Wall | 96–61 | Zhejiang Chouzhou Bank Golden Bulls |
| Scoring by quarter: 31–13, 23–21, 18–18, 24–9 | ||
| Series tied, 1–1 | ||
January 29 19:30 |
| Beijing Great Wall | 81–62 | Zhejiang Chouzhou Bank Golden Bulls |
| Scoring by quarter: 26–18, 17–17, 21–12, 17–15 | ||
| Beijing leads series, 2–1 | ||
February 3 19:30 |
| Zhejiang Chouzhou Bank Golden Bulls | 59–81 | Beijing Great Wall |
| Scoring by quarter: 19–23, 14–22, 20–19, 6–17 | ||
| Beijing wins series, 3–1 | ||
January 24 19:30 |
| Guangdong Dolphins | 86–91 | Xinjiang Magic Deer |
| Scoring by quarter: 18–24, 19–23, 20–21, 29–23 | ||
| Xinjiang leads series, 1–0 | ||
January 27 20:00 |
| Xinjiang Magic Deer | 74–81 | Guangdong Dolphins |
| Scoring by quarter: 17–22, 15–21, 19–19, 23–19 | ||
| Series tied, 1–1 | ||
January 29 20:00 |
| Xinjiang Magic Deer | 73–83 | Guangdong Dolphins |
| Scoring by quarter: 14–20, 13–25, 26–17, 20–21 | ||
| Guangdong leads series, 2–1 | ||
February 3 19:30 |
| Guangdong Dolphins | 89–78 | Xinjiang Magic Deer |
| Scoring by quarter: 16–24, 29–19, 19–18, 25–17 | ||
| Guangdong wins series, 3–1 | ||
January 24 16:00 |
| Heilongjiang Dragons | 81–92 | Shanxi Flame |
| Scoring by quarter: 19–19, 24–22, 24–28, 14–23 | ||
| Shanxi leads series, 1–0 | ||
January 27 19:30 |
| Shanxi Flame | 74–65 | Heilongjiang Dragons |
| Scoring by quarter: 21–14, 12–17, 25–14, 16–20 | ||
| Shanxi leads series, 2–0 | ||
January 29 19:30 |
| Shanxi Flame | 91–66 | Heilongjiang Dragons |
| Scoring by quarter: 21–17, 25–12, 26–17, 19–20 | ||
| Shanxi wins series, 3–0 | ||
January 24 19:30 |
| Jiangsu Phoenix | 71–98 | Shanghai Swordfish |
| Scoring by quarter: 20–33, 21–18, 18–26, 12–21 | ||
| Shanghai leads series, 1–0 | ||
January 27 19:30 |
| Shanghai Swordfish | 96–84 | Jiangsu Phoenix |
| Scoring by quarter: 18–23, 28–15, 23–18, 27–28 | ||
| Shanghai leads series, 2–0 | ||
January 29 16:00 |
| Shanghai Swordfish | 86–76 | Jiangsu Phoenix |
| Scoring by quarter: 18–19, 25–17, 23–16, 20–24 | ||
| Shanghai wins series, 3–0 | ||
February 10 19:30 |
| Shanghai Swordfish | 65–81 | Beijing Great Wall |
| Scoring by quarter: 20–15, 14–23, 13–24, 18–19 | ||
| Beijing leads series, 1–0 | ||
February 24 19:30 |
| Beijing Great Wall | 85–62 | Shanghai Swordfish |
| Scoring by quarter: 21–14, 22–16, 24–17, 18–15 | ||
| Beijing leads series, 2–0 | ||
February 26 16:00 |
| Beijing Great Wall | 76–72 | Shanghai Swordfish |
| Scoring by quarter: 22–25, 13–20, 24–14, 17–13 | ||
| Beijing wins series, 3–0 | ||
February 10 19:30 |
| Guangdong Dolphins | 62–73 | Shanxi Flame |
| Scoring by quarter: 16–19, 16–19, 18–22, 12–13 | ||
| Shanxi leads series, 1–0 | ||
February 24 19:30 |
| Shanxi Flame | 88–84 (OT) | Guangdong Dolphins |
| Scoring by quarter: 16–21, 24–16, 18–19, 21–23, Overtime: 9–5 | ||
| Shanxi leads series, 2–0 | ||
February 26 19:30 |
| Shanxi Flame | 78–69 | Guangdong Dolphins |
| Scoring by quarter: –, –, –, – | ||
| Shanxi wins series, 3–0 | ||
March 10 16:00 |
| Shanxi Flame | 81–84 | Beijing Great Wall |
| Scoring by quarter: 21–19, 17–18, 22–23, 21–24 | ||
| Beijing leads series, 1–0 | ||
March 12 16:00 |
| Beijing Great Wall | 82–55 | Shanxi Flame |
| Scoring by quarter: 19–11, 18–10, 19–17, 26–17 | ||
| Beijing leads series, 2–0 | ||
March 14 20:00 |
| Beijing Great Wall | 85–63 | Shanxi Flame |
| Scoring by quarter: 24–16, 23–13, 20–16, 18–18 | ||
| Beijing wins series, 3–0 | ||