An angle-adjustable and swingable Smith machine comprising: a frame portion which forms an exercise space; a swing portion disposed in the exercise space and connected to the frame portion , the swing portion including first and second vertical bars arranged at an interval, a horizontal bar configured to connect top ends of the first and second vertical bars , and a holding member installed on one side of each of the first and second vertical bars and including a plurality of concave portions formed thereon; a guide portion integrally connected to the swing portion to swing therewith; a rail portion installed at a top end of the frame portion and configured to guide a movement of the swing portion and comprising a plurality of fixing grooves formed on at least one side of the rail portion to set or to fix an angle of the swing portion ; an angle adjusting portion for adjusting the angle of the swing portion in connection with the rail portion ; and a barbell portion coupled to the guide portion to move upward or downward, characterized in that the swing portion further includes a supporting roller portion installed in a top end of the horizontal bar to engage with a top end of the rail portion and configured to move along the top end of the rail portion , the rail portion is configured to connect a front and a rear of the top end of the frame portion , and the angle adjusting portion includes a main adjustor installed on one side of the first vertical bar to operate when a user adjusts the angle of the swing portion , a pivoting bar in which a bottom thereof is hinge-coupled to the first vertical bar and a top thereof pivots according to a movement of the main adjustor , an operating rod connected to a top end of the pivoting bar and installed on the horizontal bar while extending toward the rail portion , and an angle adjustor installed on an end of the operating rod and configured to be inserted into one of the fixing grooves according to a translation movement of the operating rod . a frame portion which forms an exercise space; a swing portion disposed in the exercise space and connected to the frame portion , the swing portion including first and second vertical bars arranged at an interval, a horizontal bar configured to connect top ends of the first and second vertical bars , and a holding member installed on one side of each of the first and second vertical bars and including a plurality of concave portions formed thereon; a guide portion integrally connected to the swing portion to swing therewith; a rail portion installed at a top end of the frame portion and configured to guide a movement of the swing portion and comprising a plurality of fixing grooves formed on at least one side of the rail portion to set or to fix an angle of the swing portion ; an angle adjusting portion for adjusting the angle of the swing portion in connection with the rail portion ; and a barbell portion coupled to the guide portion to move upward or downward, characterized in that the swing portion further includes a supporting roller portion installed in a top end of the horizontal bar to engage with a top end of the rail portion and configured to move along the top end of the rail portion , the rail portion is configured to connect a front and a rear of the top end of the frame portion , and the angle adjusting portion includes a main adjustor installed on one side of the first vertical bar to operate when a user adjusts the angle of the swing portion , a pivoting bar in which a bottom thereof is hinge-coupled to the first vertical bar and a top thereof pivots according to a movement of the main adjustor , an operating rod connected to a top end of the pivoting bar and installed on the horizontal bar while extending toward the rail portion , and an angle adjustor installed on an end of the operating rod and configured to be inserted into one of the fixing grooves according to a translation movement of the operating rod . <EOS>