Chelsea winger Pedro was taken to hospital after a collision with David Ospina in Sunday's (AEST) friendly win over Arsenal, manager Antonio Conte has confirmed.

The Spain international clashed with the Arsenal goalkeeper as he chased a loose ball in the first half of the match in Beijing and required lengthy treatment from the Chelsea medical staff.

Pedro walked off the pitch nursing a bloodied nose and Conte opted against taking any risks, replacing the former Barcelona man with Jeremie Boga.

Conte says the 29-year-old will stay in hospital for observation, but hopes he will link up with the rest of the squad in Singapore for the International Champions Cup clash with Bayern Munich next week.

"He should be OK," Conte said. "He stays here and if the situation is okay he will come tomorrow to Singapore."

Chelsea was the dominant side on Sunday (AEST) despite having only played a single pre-season friendly against Fulham so far, with Willian and a double from Michy Batshuayi securing the win.

Conte was delighted with the performance, but warned that the Premier League champion still has plenty of room for improvement before the Community Shield meeting with the Gunners at Wembley on 7 August (AEST).

"It is good to have this start but we have to work a lot to improve on the physical and tactical. Pre-season is very important," he said.

"These games are important because you understand your level. We must be happy for the commitment of players and with our football.

"To play this kind of derby in China is great and fantastic and I want to thank all the Chinese people for this welcome. To play in this atmosphere is great for me and the players. I hope in the future to come again to experience this."