The utility model discloses a zero wall -hanging flat plate collector in inclination, include: flat plate solar collector board core, and glass box, flat plate solar collector board core slope set up in in the inner chamber of glass box, with the inner chamber fixed connection of glass box. The problem of current solar collector thermal conversion rate is low, the conversion effect is poor is solved. Consequently the utility model discloses a zero wall -hanging flat plate collector in inclination can realize the zero wall -hanging installation in inclination, need not the preparation and choose the rock when the installation. And can be according to balcony size personalized customization heat collector size, the installation form is more nimble. Through the slope setting of flat plate solar collector board core, guarantee that it has the gold angle of incidence to make heat collector efficiency maximize in winter. Overall product is more pleasing to the eye, compact. Can realize the integrated design with the building. Simultaneously, the transformation rate of solar energy is higher, the conversion effect is better.