my boss always ask me :are you in the desk for working,never give me any trust

everyday i feel so bad as my boss always ask me are you in your work time or are you in the office,as my boss does not work with me as i am working in the office for trading business,he is in his office,so i am working alone,such as,if my QQ is not on the line,he will send me a meassage and ask where are you?,or i am so boring for this as he never gives me any trust and do no belive me,i always do my best but he also gives me a bad feeling,i want to change my job but i do not know it is a good choice,please give me some advince and help me do a choice!