Jonathan Erlich and Aisam-ul-Haq Qureshi were the defending champions but chose not to participate together. Erlich played alongside James Cerretani, but lost in the first round to Guido Pella and João Sousa. Qureshi teamed up with Santiago González and lost in the semifinals to Ivan Dodig and Mate Pavić.
| Doubles | |
|---|---|
| 2018 Chengdu Open | |
| Champions |  Ivan Dodig Mate Pavić |
| Runners-up |  Austin Krajicek Jeevan Nedunchezhiyan |
| Score | 6–2, 6–4 |
Dodig and Pavić went on to win the title, defeating Austin Krajicek and Jeevan Nedunchezhiyan in the final, 6–2, 6–4.
Seeds edit
Ivan Dodig / Mate Pavić (champions)
Julio Peralta / 
Horacio Zeballos (first round)
Divij Sharan / 
Artem Sitak (first round)
Santiago González / 
Aisam-ul-Haq Qureshi (semifinals)
Draw edit
Key edit
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
Draw edit
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | I Dodig M Pavić
| 4 | 6 | [10] | |||||||||||||||||||||||
L Paes MÁ Reyes-Varela
| 6 | 3 | [5] | 1 | I Dodig M Pavić
| 3 | 6 | [10] | |||||||||||||||||||
| WC |  M Gong Ze Zhang
| 66 | 77 | [8] |  D Molchanov I Zelenay
| 6 | 3 | [4] | |||||||||||||||||||
| D Molchanov I Zelenay
| 78 | 64 | [10] | 1 | I Dodig M Pavić
| 5 | 6 | [10] | |||||||||||||||||||
| 4 | S González A-u-H Qureshi
| 6 | 4 | [10] | 4 | S González A-u-H Qureshi
| 7 | 4 | [8] | ||||||||||||||||||
| T Fritz B Klahn
| 2 | 6 | [2] | 4 | S González A-u-H Qureshi
| 6 | 6 | ||||||||||||||||||||
 M Ebden M Zverev
| 6 | 6 | M Ebden M Zverev
| 4 | 0 | ||||||||||||||||||||||
| WC | X Gao R Te
| 3 | 2 | 1 | I Dodig M Pavić
| 6 | 6 | ||||||||||||||||||||
 R Albot M Jaziri
| 2 | 3 | A Krajicek J Nedunchezhiyan
| 2 | 4 | ||||||||||||||||||||||
| Alt |  R Bemelmans P Gunneswaran
| 6 | 6 | Alt | R Bemelmans P Gunneswaran
| 3 | 5 | ||||||||||||||||||||
| A Krajicek J Nedunchezhiyan
| 3 | 77 | [10] | A Krajicek J Nedunchezhiyan
| 6 | 7 | |||||||||||||||||||||
| 3 | D Sharan A Sitak
| 6 | 62 | [7] | A Krajicek J Nedunchezhiyan
| 7 | 6 | ||||||||||||||||||||
 G Pella J Sousa
| 7 | 6 | G Pella J Sousa
| 5 | 1 | ||||||||||||||||||||||
J Cerretani J Erlich
| 5 | 3 | G Pella J Sousa
| 77 | 6 | ||||||||||||||||||||||
| S Balaji R Bopanna
| 6 | 5 | [10] | S Balaji R Bopanna
| 61 | 3 | |||||||||||||||||||||
| 2 |  J Peralta H Zeballos
| 1 | 7 | [8] | |||||||||||||||||||||||