Compared with vertical and horizontal wells，fishbone wells have advantages such as high single well control reserves and large reservoir contact area. However，in the development process，it is often necessary to inject water to supplement the formation energy in a timely manner. Branch wellbore structures are complex. Irregular injection-production well networks are often constructed using vertical or horizontal wells as injection wells on-site. However，problems such as rapid water rise in branch wells，rapid decline in oil production，and difficulty in allocating water injection rates exist during actual production processes. It is necessary to research on the characteristics of oil-water movement under different injection-production methods and different wellbore types. Using two-dimensional visualization models，red dyed kerosene，and black ink，physical simulation experiments were conducted to study the oil-water movement characteristics of fishbone well groups with different branch angles（30°—90°） under different injection-production well types，and then the numerical simulation results were validated. The results showed that when horizontal wells were injected with water，the greater offset of the oil-water front towards the branch resulted in a more uniform advancement of the oil-water front. When vertical wells were injected with water，the advancement of the oil-water front was slower，but the affected area in the water-flooded state was larger. When water was injected into vertical wells，the fishbone well with a branch angle of 45° had the highest recovery rate（61.10%）. When water was injected into horizontal wells，the fishbone well with a branch angle of 30° had the highest recovery rate（57.97%），meanwhile，the distribution of remaining oil was the least in the water-flooded state. When the branch angle was less than 30°，the water injection effect of horizontal wells was better. When the branch angle was greater than 45°，the water injection effect of vertical wells was better. Comparing the oil-water movement field maps and recovery rates of physical simulation experiments and numerical simulation experiments，the results were quite consistent. The experimental results had a high matching degree with applicable reservoir characteristics. The research results provided theoretical guidance and reference basis for the deployment and parameter optimization of fishbone well injection-production networks in actual oilfields.