Abstract: Objective To investigate the status of mental health and its influence factors among the workers on offshore oil recovery platform.Methods To tally 196 works were recruited.Symptom Check list-90(SCL-90), Self-Rating Anxiety Scale(SA S), Self Rating Depression Scale(SDS), Knowledge, Attitude, Practice(KAP) Scale, Stress Questionnaire, International Physical Activity Questionnaire(IPA Q) Short Forms and the essential information questionnaire were applied to evaluate the status of mental henalth of the wo rkers.Physical examination and biochemical evaluation were conducted smiultaneously.Results The results of SCL 90 test showed that the total score, depression score, anxiety score, and psychosis score of the workerswere 130.72±37.37, 1.63±0.50, 1.53±0.57, and 1.45±0.49, respectirely, and were significantly higher than those in Chinese adultnorm(P < 0.05).The number of workers with anxiety and depression were 76 and 57, with the prevalences of 38.8% and 29.1%, respectively.The results of multivariatelogistic regression analysis showed that the influence factors of mental health we reoccupational stress, adaption of special condition and life plumpness.A daption of special conditions, nutritional and healthy awareness, physical acticities and life plum pness were main influence factors of anxiety scales.While the main influence factors of depression scales included physical activity, life plumpness, nutritionre lated chronic disease, and shift of life rhythm.Conclusion The workers on offshore oil recovery platform have some mental health problems and the comprehensive intervention including psychology, nutrition and exercise should be developed.