Objective To investigate the status quo and influencing factors of pain catastrophizing in patients with radiationinduced injury pain to provide evidence for clinical prevention and intervention of it. Methods From June 2021 to January 2022

115 patients with radiation-induced pain were enrolled in the First Affiliated Hospital of Zhengzhou University. A cross-sectional survey of patients was conducted using the General Data Questionnaire

Pain Catastrophizing Scale（PCS）

Numerical Rating Scale（NRS）

and Social Support Rating Scale（SSRS） to analyze the correlation between pain

social support

and pain catastrophizing levels. Multiple linear regression was used to analyze the influencing factors of pain catastrophizing in radiation-induced injuries. Results The total PCS score of 115 patients with radiation-induced pain was 21.13±3.75

in which the meditation dimension score was 4.52±2.87

the exaggeration dimension score was 4.59±3.41

and the helplessness dimension score was 11.74±7.45. The incidence rate of pain catastrophizing was 18.26% in patients. There were significant differences in PCS scores among patients with radiation-induced injury of different ages

radiotherapy sites

education levels

living style

duration of illness

type of radiation-induced injury

and grade of radiation-induced injury（P<0.05）.Pearson correlation analysis showed that NRS score was positively correlated with PCS total score and contemplation

helplessness

and exaggeration dimension scores（r=0.418

0.445

0.450

and 0.370

all P<0.05）. The SSRS score was negatively correlated with PCS total score and contemplation

helplessness

and exaggeration dimension scores（r=-0.339

-0.368

-0.411

and-0.359

all P<0.05）. The multiple linear regression analysis showed that age

radiotherapy site

living style

duration of illness

type of radiation injury

and grade of radiation injury were all influencing factors of pain catastrophizing level in patients with radiation injury pain（P<0.05）. Conclusion There are many influencing factors of pain catastrophizing level in patients with radiation-induced pain

and the degree of pain is positively correlated with the level of pain catastrophizing

and the level of social support is negatively correlated with the level of pain catastrophizing. Therefore

we should pay attention to the assessment of pain catastrophizing in patients with radiation-induced pain in clinical practice

actively intervene to reduce pain in patients

and strengthen social support

so as to reduce the level of pain catastrophizing in patients with radiation-induced pain.