If a patient has received the 13-valent pneumonia vaccine, it is usually not recommended to receive the 23-valent pneumonia vaccine. If the patient has special needs, he/she can receive the 23-valent pneumonia vaccine according to the doctor’s prescription. The 13-valent pneumonia vaccine is known as 13-valent pneumococcal polysaccharide conjugate vaccine. The 13-valent pneumonia vaccine can prevent pneumococcal diseases caused by 13 serotypes of Streptococcus pneumoniae, and it is applicable to infants and young children aged 6 to 15 months. The 23-valent vaccine, also known as the 23-valent pneumococcal vaccine, can prevent pneumococcal diseases caused by 23 pneumococcal serotypes, and is applicable to people over 2 years old. From this, it can be seen that the two vaccines are applicable to different groups of people. Moreover, patients who have received the 13-valent pneumococcal vaccine have already possessed the relevant immunity ability, and it is usually not recommended to receive the 23-valent pneumococcal vaccine again to avoid repeated immunization. However, if patients have special needs, they can be vaccinated under the guidance of a doctor after eliminating contraindications to vaccination.