  We present a simple domain generalization baseline, which wins second place
in both the common context generalization track and the hybrid context
generalization track respectively in NICO CHALLENGE 2022. We verify the
founding in recent literature, domainbed, that ERM is a strong baseline
compared to recent state-of-the-art domain generalization methods and propose
SimpleDG which includes several simple yet effective designs that further boost
generalization performance. Code is available at
https://github.com/megvii-research/SimpleDG
