Pain relieving cream is recommended to be used at night before going to bed and removed in the morning after waking up, usually applied for no more than 12 hours at a time. Pain Relieving Cream is a more commonly used topical plaster for the treatment of bruises in clinical practice, and can also treat localized pain due to qi stagnation and blood stasis, and it is recommended that it should not be used for more than 12 hours at a time. If used for too long, the pores and sweat glands of the skin are covered by the medication, and the lack of oxygen, humid environment and the stimulation of the medication itself may induce localized allergies and dermatitis and eczema. In addition, pain relief creams contain drug ingredients with relatively strong side effects, and it is usually recommended to use them for 5-7 days in a row, preferably not more than 2 weeks, to prevent prolonged drug absorption from causing other adverse reactions. In addition, patients with low liver and kidney function and relatively sensitive skin are not recommended to use pain relief creams.