The invention discloses a textile fabric pre-shrinking device. The textile fabric pre-shrinking device comprises a pre-shrinking device body, the front surface of the pre-shrinking device body is provided with a working chamber; the inside of a universal wheel, one side of the inner wall of the universal wheel is fixedly provided with an electromotor, and the lower portion of one side of the innerwall of the universal wheel, which is close to the electromotor, is embedded with a humidity sensor; the lower end of a support is fixedly connected with a heating chamber; the outside of the electromotor is provided with a sound insulating cover. According to the textile fabric pre-shrinking device, the electromotor and fabric feeding rollers can avoid surface unevenness of pre-shrunk textile fabric; the humidity sensor receives signals to automatically control working of the heating chamber to achieve high automation degree; the heating chamber can ensure a normal pre-shrinking process of the textile fabric; the sound insulating cover can achieve protecting effects on the electromotor and meanwhile reduce noise pollution led by the electromotor when in work to protect hearing of users.