Objective A comparison of two method of establishing pressure ulcer rat models to determine which is the most suitable for experimental use. Methods 18 male SD rats were randomly divided into control ( n= 6), model A (n= 6) and model B (n= 6) groups. In the control group, iodophor treatment was given after hair removal at the simulated modeling site. In model group A, longitudinal compression was performed by simple deep-tissue foreign body implantation.In model group B, transverse compression was performed via the magnet compression method. The times required to complete the process and for each stage of pressure ulcer model establishment in each group were recorded. The general condition of the rats was observed, and the modeling rate, mortality rate, and infection rate were compared. Results By naked eye, we observed that the model A and model B groups gradually developed redness and swelling, ulceration,bleeding, exudation, and necrosis. Comparison of the whole time to produce pressure uler between model A and model B groups:the difference between the two groups was statitically significant (P<0. 05). Comparison of the time to produce pressure injury between Model A and Model B: The difference between the two groups at stage I was not statistically significant (P>< 0. 05); the difference between the two groups at stage II was statistically significant ( P< 0 05); the difference between the two groups at stage III was statistically significant (P<0 05); the difference between the two groups at stage IV was statistically significant P< 0 05). The mental and sports scores of the rats in the control group were significantly different from those in the model A and model B groups (P<0. 05). The general state of rats in the model group A was significantly different from that in the model B group, and coat color was dimer and activity decreased in the model group A. The modelling rate of rats in both model A and model B groups was 100%. The mortality and infection rates of the model group A were higher than those of the model group B, which were 33. 34% and 16. 70%, respectively. Conclusions Successful preparation of a four-stage model of pressure ulers in both modalities. The two method have both commonalities and distinct characteristics. The magnet compression method required less time, the rats were generally in good condition, and the mortality and infection rates were low; thus it is suitable for short-term intervention research. The simple deep-tissue foreign body implantation method took longer, required rats to have a certain level of tolerance, had high infection and mortality rates, and is more suitable for use for long-term observations of pressure ulcers.