Walking pain in the big toe joint of the foot can be caused by the following reasons: First, the more common is plantar fasciitis of the toe joint, which is a sterile inflammatory disease that usually arises in the weight-bearing area, so the big toe joint is easy to be attacked. Secondly, pain in the big toe joint when walking is also very common in bunion deformities, also known as bunions. When a bunion develops, there is more force on the big toe joint and it can lead to significant pain when walking due to friction from the bone and bunions. Finally, the cause of pain when walking in the big toe joint of the foot can also be gout as well as rheumatic and rheumatoid diseases.