On May 18, NASA announced that the data of attitude control system sent back by Voyager 1 was abnormal. It is not yet clear what the cause of this anomalous problem is. I did some simple analysis here. It is thought that the anomaly may be due to interference from cosmic rays, causing problems when the data is sent back to Earth. In addition, I also analyze from the dark matter fluid model. It is also believed that there may be space-time anomalies at the edge of the solar system's heliosphere, causing the spacecraft to frequently adjust its attitude according to the curvature of space-time. But the whole process did not find any problems with the actual spacecraft attitude on Earth. If it is because of the dark matter fluid, it is likely that we will lose contact with Voyager 1 in the near future. However, neither of these two hypotheses seems to have very solid theoretical evidence, and most of them are guesses. Therefore, further information needs to be confirmed by Voyager 2.